This moist and delicious keto chocolate mug cake is the perfect size for one. Made with almond flour and cocoa, it has a perfect cake texture.
If you’re a woman, you probably understand what I’m about to say, but sometimes I could literally go-out-of-my-mind for something chocolate. It doesn’t matter what it is – a chocolate smoothie, a chocolate cookie, a chocolate truffle, or a piece of chocolate cake.
When this chocolate craving hits, I don’t want to get out 12 ingredients and wait 40 minutes for a keto cake to bake. I want something fast and delicious and NOW! But, it has to be a single serving cake because, Lord knows, I would eat a whole cake if it was available. (Okay, so that was an exaggeration, but not by much!)
Keto Chocolate Mug Cake
My chocolate craving buster of choice is this keto chocolate mug cake. It’s super easy and the texture and taste is like the real thing – we’re talking a real chocolate cake in a mug!
I like to use cute ½ pint wide mouth mason jars for my cakes because I LOVE THEM. They are the perfect size for this 6 oz (volume) chocolate mini cake, but a small cappuccino cup works, too.
The fact that the chocolate cake cooks in just 50-60 seconds is even more attractive. There’s no excuse to go out and grab a snack from somewhere else when you can make this at a moments notice.
And because keto mug cakes are a single serving, I could literally eat a whole cake and not feel guilty about it. Something this delicious is the perfect cheat.
I know many of you are into “cheat days”. While some of you go off-plan, I think it’s fun finding something on-plan that tastes great and kills that chocolate craving.
Next level keto chocolate mug cake!
To take this cake to the next level try some of these ideas.
- add a few berries to the batter
- add 1/16-1/8th teaspoon flavoring extract to the batter
- put a spoonful of sugar-free jelly in the center of the batter
- place a small square of dark chocolate in the middle of the batter before cooking
- put a spoonful of sugar-free chocolate hazelnut spread in the center of the batter
- top with sugar-free homemade hot fudge or store bought sugar-free chocolate sauce
- top with whipped cream or whipped coconut cream
- sprinkle cinnamon, cocoa powder, powdered sweetener or grated chocolate on top
Why this keto chocolate mug cake is different:
Most mug cakes call for a whole egg. While this is efficient, it produces really dense and tough cakes. It took me about 15 tries to get this recipe just where I want it in taste and texture. The secret is using just the yolk and some mayonnaise. The yolk adds structure to the cake and the mayo makes it nice and moist.
This recipe works very well as a peanut butter mug cake, too. Make sure to see the peanut flour mug cake recipe I did for Sukrin USA.
What to do with that leftover egg white!
So now you have a leftover egg white. What do you do with it? Add it to another baking recipe, add it to the egg when making homemade mayonnaise, Whip it and fold into cream cheese clouds, or add it to your morning eggs.
-OR- Wait for it….. save it to make another mug cake. A single egg white works in this recipe, too.
Egg whites freeze really beautifully. I freeze three at a time so I always know how many are in any container I pull from the freezer. They are especially great in psyllium bread recipes or in buttercream frosting.
This easy Keto Chocolate Mug Cake is 3 net carbs per cake.
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Keto Chocolate Mug Cake
Ingredients
- 2 tbsp almond flour
- 1 tbsp cocoa powder
- 1 tbsp low carb sugar (Swerve or Lakanto)
- 1/4 tsp baking powder
- 1 tbsp mayonnaise (use sour cream in a pinch)
- 1 large egg yolk
- 1 tsp water
Instructions
CAUTION:
- Be very careful using only stevia to sweeten chocolate baked goods. The bitter compounds in stevia and the bitter compounds in chocolate have a synergistic effect, making your treat terribly bitter!
Preparation:
- Fluff up the almond flour with a whisk before measuring and SIFT THE COCOA POWDER BEFORE MEASURING. (I sift any cocoa powder I buy and keep it in an air-tight container. This breaks apart any lumps for more accurate measuring. Using compacted cocoa results in using more cocoa and a bitter cake.)
Method:
- Measure the dry ingredients into a mug or jelly jar and mix completely with a fork.
- Add the mayonnaise, egg yolk, and water, stirring completely making sure to get it all from the bottom. Let batter sit 1-2 minutes.
- Microwave for 50 seconds, depending on your microwave. 3 Net Carbs.
- NOTE: Although the texture is a little different, 1 large egg white can be used instead of the large egg yolk, solving the problem of a leftover egg white.
Video
Notes
Nutrition
The Swerve after taste (I think the alcohol sugar) was strong and unpleasant. I think I’ll try Besti allulose.
Good idea, Dixie. I don’t enjoy Swerve as much as others – I feel that it burns my throat, but the Allulose should do nicely. -Kim
Turned out great. I’ve tried several different recipes that were pretty good but this one is the best I’ve had.
AMAZING! I can’t believe the difference the Mayo & yolk only, made.
So darn moist. I put a dollop of Choczero chocolate syrup on it while it was still hot. Made it sticky good. I’ve been experimenting w different recipes and this one is by far the most moist and closest to cake. Thank you so much for your recipes and look forward to trying more.
I made a Rum cake from the keto chocolate mug cake recipe and it was delicious. I omitted the cocoa. Adding Rum extract & cake batter flavoring. Also some brown sugar swerve for richness. Probably not necessary but wanted the added sweetness. To make it nuttier I added heart of hemp seed. Nooked then topped w homemade whipped cream. I didn’t measure the added ingredients. I served it w espresso & cappuccino. Lovely desserts.
Thanks for the recipe, it’s simple and sounds delicious.
This is my second recipe that i have tried! First i used your bacon spinach quiche! Now chocolate mug cake! Your the BEST!! Love using your information! Always simple and just what i need. !
I just keep making this every night! I finally make up multiples of the dry ingredients to save time.
Wonderful. I added 1/4t vanilla nut extract and a few pecan pieces to the top before cooking. Afterwards I topped it with whipped cream. Super yummy although not quite sweet enough for me. I used 1T swerve, next time I’m going to add 1 additional teaspoon.
This recipe has come into my life when I needed hope & help, thank you! This is the best low carb choc mug cake I have ever made (I’ve made about 20 in the last 2 years and just ended up going back to regular cakes) and I managed to make a generous one below 3 carbs; 15g ground almonds, 15g organic ground flaxseed, 15g cocoa powder & all the other ingredients as listed by Kim. Because of this, I made a rich topping amounting to around another 2-3 carbs; 1/2 sachet avalanche sugar-free hot choc powder, 1 tsp cocoa, pinch of salt, around 1 tbsp dbl cream mixed in which forms a lovely light mousse texture within seconds & a couple of drops of sweetener – I put 1/2 on one side of my mug cake, then added orange oil to the remainder of the choc mousse mix & put that on the other 1/2 of my mug cake – it was absolutely delicious. I really can’t thank Kim enough…I’m newly diagnosed T1 & also going through menopause & get ferile carb cravings which sets off a vicious cycle of high glucose/high insulin. I only had to take 0.5 units of insulin for this mug cake as opposed to say 4 units for a flour cake or bar of chocolate like Mars. Mrs. Kim, recipes like these don’t just bring joy to the palette, they help save lives too! Thank you
Thank you, Helen, for your perfectly lovely comment. How fun that you made this recipe your own with the yummy “mousse” addition. I’m so happy to hear that this recipe was delicious enough to satisfy your craving for cake, but even more thrilled that it helped you keep your blood sugar down so that you could use less insulin. Well done! -Kim
This is delicious but when I looked at all of the nutrition labels (I used Swerve for sweetener) I found it to add up to way more than 7 g of carbs. Where are you getting 7 g from? I’m wondering if it’s the brand of almond flour or cocoa I’m using. I do low carb but not keto so I don’t use net carbs I use actual carbs.
Nicole, I calculate my nutritional info on Fatsecret. It has one of the best databases for this. I also enter all of my ingredients as weight instead of choosing the pre-maid values. Be careful choosing ingredients like mayo – some brands contain a lot of sugar and if you choose that ingredient in your calculations, your nutritional information will be off. Also, I do not enter the sweetener into the calculations since the body doesn’t digest it. Adding it to the ingredient list when calculation will falsely inflate the carb count. I’ve been doing this for 7 years and know how to get the most accurate counts I can possibly get out of the calculators I use. BTTW, MyFitness Pal is notoriously terrible for calculating nutritional info, in my experience. -Kim
Hi Nicole,
I made my delicious mug cake at less than 3 carbs – the only diversion I made from Kim’s recipe was substituting a tbsp of almond flour with organic flaxmeal – with the ground almonds I use, even if I used 2 tbsp, I can’t for the life of me work out how Kim’s recipe would reach even 5 carbs let alone 7 – there’s barely any carbs in the other ingredients, so it must be the almond flour you’re using?
Tastes delicious and so easy, one recipe I actually had everything for
I was getting a mug cake that rose. Texture 10/10
Taste 10/10
Recipe 10/10
Thank you so much
Phil
This recipe didn’t work for me. I don’t know what I did wrong.
Hi Jan. Here are a few things to keep in mind.
1. Using compacted cocoa powder will result in using much more cocoa powder than the recipe calls for. Alway sift your cocoa when you buy it and then store it in an airtight container.
2. Make sure to use ALMOND FLOUR, not almond meal. Almond flour id very finely ground blanched almonds. Almond meal is ground with the skins on and has a chunkier texture. They do not behave the same in recipes.
3. Microwaves differ in power. You may need to cook it at shorter or longer duration.
4. Using the egg yolk and a neutral tasting mayonnaise produces the best result.
5. Stevia based sweeteners may make chocolate baked goods bitter.
I hope this helps. -Kim
What would be a good substitute for the almond flour in this recipe? I have a peanut/tree nut allergy.
Hi Carlotta. Try about 1 tbsp of coconut flour or substitute sunflower seed flour for the almond flour. -Kim
Nice and moist. Added unsweetened coconut to my husband’s. He’s a happy man tonight!
I followed this recipe exactly and it turned out perfect! It was moist just as advertised. It turned out much better than the chocolate cakes I made in my oven. Thank you for this!
Can I use swerve confectioners sugar since I only have stevia on hand?
Yes. You can use Swerve. Because it’s powdered, you may want to add a little bit more (maybe 1-2 tsp.). -Kim
Batter, my mix was a solid lump, are you sure the liquid elements measures are correct! Fail.
Hi Richard. I’m sorry you experienced a “Fail”. That’s not fun.
I’m guessing that the cocoa you used was compacted. Cocoa powder is famous for settling during shipping and compacting into a solid mass. When one goes to use it, they end up using 2-3 times the intended amount. Also, cocoa powder is extremely absorbent (kinda like coconut flour). So if one uses more cocoa powder than a recipe calls for, it will be a “solid lump” upon mixing.
Further on a possible measuring issue: It’s also important to fluff-up any low carb baking ingredient before measuring. Almond flour and coconut flour both clump and form lumps upon sitting on the shelf; the former because of its inherent moisture content and the latter because it absorbs ambient moisture. Clumps result in using more of an ingredient than a recipe intends.
Lastly, when measuring ingredients, dip and scoop up, then level across the measuring cup/spoon with a sweep of a straight edged knife to remove excess ingredient. Avoid pushing up against the side of the container, which compacts ingredients- leading to using more of the ingredient than intended.
Other than that… Make sure to use the yolk from a large and not a medium egg and check that you used finely ground blanched almond flour instead of coconut flour or oat fiber.
The recipe works. With everything else equal, the only point in variability would be microwave strength and that is a small experiment in varying the time. I hope this helps you find success. -Kim
I used coconut oil instead of mayonnaise and it still turned out amazing
What a treat. Great flavor, great texture. I like using swerve confectionary sugar.
Just tried this recipe. Divided it between two ramekins and zapped for 40 secs. Turned out really well, I was delighted. Will make again next time the craving hits.
Love this recipe I add lilys choc chips to the center for a nice warm lava with a scoop of low carb vanilla icecream very delicious it’s my go to mug cake. Tks
Brilliant! This is exactly what I’ve been craving. The tips about Stevia and bitterness. Mayo! And seperating the egg,will all be valuable moving forward
I was wondering if you could bake it in the oven instead of the microwave, since l don’t even have one? And if so, for how long?
Thank you!
Cant wait to try it!
You can, Mary, but because it is such a small amount, I would be afraid of over baking. There was a comment that mentioned baking and how they did it. I think they used a toaster oven set at 350. If you are baking in a glass ramekin, remember that glass is slow to heat up and holds on to heat for a long time. -Kim
Perfect texture
I wanted to see everyones comments but i can not see them on.this one :(
Just made the best keto chocolate cake that I have eaten yet!!! Awesome recipe!! Thank you!!
Just made this and definitely one of the best keto mug recipes out there. Fluffy and moist! Had a question. How can I make this a protein keto mug cake? Just add a scoop of my chocolate gold standard whey protein powder? Or what adjustments do you think would need to be made?
Hi Mo. I’m glad you like the mug cake recipe. I find adding protein powder to mug cakes makes them tough – it’s the stirring that does it. I would have to spend several days getting it right, so I suggest starting with 1 tablespoon and more water and see what that does. Adding a whole scoop will result in an entire recipe re-do. -Kim
What brand of mayo do you usr? I use Dukes mayo. It has the least amount t of sugar. Will the taste be different if I use a whole egg? Thanks for yummy low carb recipes.
Just tried for a quick sweet fix. It was great! Will definitely be making this again and again. I did add about 1/4 tsp vanilla extract and a tiny pinch of sea salt
This is by far my favorite mug cake I normally add just a couple of Lillys chocolate chips and a sprinkle of crushed pecans and instead of using a teaspoon of water I use a teaspoon of Jordans skinny syrup it definitely brings out the flavor even more
Excellent and super easy to make! Thank you so much for sharing this with us♥️
So good! I topped my with some leftover keto cream cheese frosting. This will be on repeat at my house!
I can’t tell you how many times this recipe has helped me stick to my diet. I love it! I do add just a sprinkle of salt because I like salty and sweet. Thank you!
Definitely the best i tried so far!!
Excellent dessert for that chocolate cake need. I put a tbl of Too Good vanilla yogurt on top and it was a nice extra touch for this yummy dessert. I’ll definitely make again. Next time I’ll make some fresh homemade whipped cream for it. And the 50 seconds microwave cooking time is AWESOME!!
I made it and the texture was great and no eggy taste! Thanks for sharing it was such a treat!
I never leave reviews but this one i will. I was worried about the mayo and so little water but I was wrong. It definitely hit the spot when craving chocolate.
Wow I am so floored at how good this chocolate cake mix is. I mean honestly it doesn’t even taste “healthy” it’s so good! Thank you for this recipe you have literally helped me save on calories!
Excellent texture and flavor! I never thought I’d make a cake with mayonnaise. I recommend using Dutch process cocoa, and a small pinch of salt (kosher if you want the occasional blast of salt) for insurance to hide any bitter flavors, and to boost the percieved richness of the chocolate.
It’s hard giving up desserts. Now I don’t have to!
Hey Kim, really enjoyed this recipe! Any chance you could convert this into a recipe for an 8inch cake? 🙏🏻
I have tried at least 10 low carb chocolate mug cakes this is the best! thank you. It’s quick it’s easy and delicious
Hands down the best keto mug cake I’ve ever tried and eaten :) this is going to be my go to recipe !
This is a very tasty dessert. It is tender and has just the right amount of chocolate flavor.
This recipe is just great. It taste like regular cake to me and I don’t feel that I am missing out anything.
Hi!
Unfortunately couldn’t find any almond flour at the store but did manage to find coconut flour. Do I still use 2tbsp? It seems a bit try. So I added a bit more water but that didn’t really fix the dryness.
Hi Pauline. Subbing coconut flour for almond flour is not a straight swap. Try 3/4-1 Tbsp. -Kim
I loved this. Mine turned out excellent. Used monk fruit and no chocolate chips. I cooked it for a minute then let it sit for a minute and the texture reminded me of an actual slice of cake.
I made this and it’s DELICIOUS and very easy! Loved
I’ve tried so many mug cake recipes and this is hands down the best! It’s easy to memorize and prep extra dry ingredients to keep on hand for an even faster treat. If you use this recipe definitely follow her tips and use a sweetener other than pure stevia and experiment with adding things to the middle. I like peanut and almond butter with chocolate; pure nut butters but be a bit too much so add a dash of milk to make a sauce or mix with jam for a pb&j twist soooo good!
I never leave reviews but this was delicious. I made it according to the recipe, while I boiled (and then strained) some raspberries with Swerve. Poured the raspberry syrup over the cake and added whipped cream. Made a great keto replacement for Black Forrest cake!
First keto mug cake that is truly moist! Delicious!
Lovely with the addition of mayo, thought it would be gross but I was wrong. I would recommend using a whole egg or adding a tablespoon on water rather than a teaspoon, mix is quite tough to stir without some extra liquid. Coconut flour may also be used (experimented with both), also experimented with a tablespoon of almond milk rather than water, which was preferable (for me); gives a slightly more flavourful result. I also added a bit of 85% dark chocolate in the middle of the mix before cooking for my latest attempt, to make a lava cake (I needed a pick-me-up). That was perfection!
Fantastic, best mug cake I have made (and I have made many)! I did not add any sweetner to it and used a whole egg, it was delicious.
This hit the spot and I’m VERY picky with keto desserts especially chocolate ones. Thank you for the great base recipe. I added hazelnut skinny syrup and cinnamon and topped with Enlightened ice cream! Delicious
Im speechless ! This is the first mug cake ive ever had and ever made. It was soo delicious, chocolatey and moist. It definitely cured my MUCH needed keto sweet tooth ! Thank you so much Kim for sharing this recipe.
100% recommended
This is very good, not too sweet and definitely had true cake texture/mouthfeel, I did add another half teaspoon of baking powder just a fluff it up even more and I served it with some whipping cream with allulose and vanilla extract. Excellent chocolate cake base, I can’t wait to try some of your ad-on suggestions like the chocolate chips or sugar-free caramel or sugar free jam. Thank you again!
This is my goto mug cake but I replace 1 TBS of almond flour with coconut flour and put about 10 g of 70% cacao dark chocolate in the middle!
Only a Tablespoon of coconut flour for whole recipe? Or rest of 1/4 cup filled with almond flour? Thank you in advance!
Yes 1 TBS of almond flour and 1 TBS of coconut flour. I think the texture is better. Might need to add a tad more water though.
Ooh, this got the spot exactly! I added a block of 75% dark chocolate and was transported to food heaven. Yum!!
Just made this cake and it was absolutely delicious! I face timed my friend to show her and she promptly made one herself and it’s 7 year old approved!
Just tried it, I was expecting something denser, more fudgy?….but it then I tried it and did not disappoint! it was super fluffy but a bit dry, good thing I added stevia choc chips. maybe next time I will also add a tsp of coconut oil?
It sounds like cooking it for a few seconds less might do the trick as microwaves vary in power. -Kim
Fast, easy, chocolatey and yummy.
The best keto mug cake texture i have found. I like adding a bit of cream cheese into the middle!
Literally just saved me from diet sabotage following emergency chocolate craving! Have lost 6stone on keto and desperately avoid ‘cheat days’ as I find them so hard to come back from. I decided to google keto chocolate mug cake and this looked perfect as had all the ingredients….was a little sceptical making a cake with mayonnaise! Needless to say it was absolutely delicious (added a dollop of thick cream) and will now be my go to emergency plan! Thanks so so much :-)
I’m so happy, Becks. I keep several small mason jars with individual portions of mix in the pantry so all I have to do is add the mayo (or sour cream) and an egg yolk. It has saved me many times, too! -Kim
This is fantastic!!!! So easy and delicious! I will be making this many times, and I will add walnuts or pecans next time … like a brownie in a mug. Thank you so much! I needed this :)))
I decided to try your recipe after seeing it holds “first place” in reviews 👍OMG, I see why! This is really good. I will definitely be following you my friend. Thanks for sharing this tasty, quick and easy recipe.
Just made it. Tastes great. Only thing I added was a dash of vanilla essence, pinch of salt and a dash of roasted espresso beans powder.
Brilliant
This recipe is awesome. I didn’t have any vanilla extract but it didn’t matter. Definitely a keeper!!
So I really want to make this but I don’t have a microwave! Is there any way to cook this in the oven?
Hi JR. You may be able to use a toaster oven, but because the portion is so small, the risk for burning the cake is great. Try setting the toaster oven at 225F and you will have to watch it. Moreover, microwaves produce amazingly fluffy cakes. I’m not sure you will get the same fluffiness in the oven. -Kim
Perfect! I did this in my toaster oven as I didn’t have a microwave and I cooked it at 350 for 7 minutes!! It was perfect and fluffy!!!
Loved this! Is there a recipe to make a larger version? like in a loaf pan or something? Thanks!
Hi Azaria. I plan to make a bigger version (cooked in the microwave), but I’m not quite there yet. -Kim
This was so good and moist. I added a tablespoon of unsweetened coconut, doubled the almond flour to 1/4 cup and added a few chopped walnut chunks, added water to right consistency. Truly wonderful. Thank you for the recipe. Leaving the egg white out and adding mayo was brilliant.
Kim, I can’t thank you enough for this recipe! It’s been a struggle to stay on Keto with my sweet tooth. I made this exactly as noted, using sour cream since that’s all I had. I also added a raspberry to the batter. This was incredible!
We used monk-fruit and cacao and the whole egg. Dropped a dozen low carb semi sweet chips on top and cooked for 60 seconds. Loosened with a fork and inverted in a bowl. The chips sunk to the bottom so they were on top when plated. Served with whipped cream. It was great!!! Delicious, moist and hit the chocolate craving. Couple from Point Pleasant NJ says thanks…
Amazing! I had everything I needed in my cupboard! Almost put only egg whites….oops, caught it just in time! It really helped me when I HAD to have CHOCOLATE…..NOW! So easy, so fast!
Perfect! Don’t need to learn a different recipe after this. Only thing that I might add next time is a little bit of walnuts. I used homemade chocolate fudge and as I said PERFECT! Thank you
I don’t usually comment on recipes but had to let you know how amazing this mug cake is! It honestly tastes even better than a non-keto chocolate cake- especially when topped with dollop cream and berries! It’s my go-to for a yummy treat every time!
I am carnivorish and substituted the flour for pork rinds, the mayo for heavy cream, no sugar, I forgot to add water and added just a dash of vanilla.. I am trying to perfect this mug cake thing because it’s hard to do with this diet but this was actually pretty good!
Yeah. Carnivore is quite a bit more restrictive. I have made pork rind pancakes before (about 10 years ago) and have a recipe for pork rind wraps that are great as a tortilla sub or sandwich wrap. I haven’t tried a pork rind mug cake though. That may be worth the experiment. Thanks for the idea. -Kim
Omg! Thank you. I was needing chocolate baaaaad!!! This is really good! Thank you
Ahhhmazing!
I admit I wasn’t sure if this would taste good and it didn’t just taste good, it was absolutely delicious! I would never have guessed it was sugar free and low carb. I put a scoop of carb smart vanilla ice cream over it and gobbled it up. Thank you so much for perfecting this recipe! ❤
I have been in the hunt forever! This was so amazing. I added two tbsp of lakanto. Tipped it with some Lily’s chips and walnuts. Ughhh thank you so much
This is a good recipe. I did find the cake to be really dry, but that is what cocoa powder does.. Sucks the moisture out of everything. SOOO, I made this again but doubled the recipe and added 1/4 c water to the yolk/mayo mixture.. And after added it to the flour, it was a very loose batter but the end result was so moist! I microwaved for 90 seconds and make sure ur mug is big enuff so it doesnt over flow.
My cocoa was bitter from not following instructions. Also need to get a different Keto mayo. Mine had garlic and onion pre-mixed in. Will try again.
Okay, so I tried this, but used coconut flour and Stevia (what was available. I also added just a little more water. It was soooo good!
This was seriously good! The texture was great and taste was fabulous. I added some stevia sweetened chocolate chips and it was too good!
Hi, what would be a good alternative if I do not have a microwave for this recipe.
You can cook it in a toaster oven or regular oven at 350 F. The only thing I worry about with the oven is that amount of batter is so small that it may cook too quickly and dry out. -Kim
Just made this, and ate the whole cake! (The hubby helped and loved it). I added a tad of vanilla flavoring and topped with 1 each, walnut, almond and cashew. Once cooked, I sprinkled a tad more monk fruit granulated sugar and a sprinkle of cinnamon! Delicious! Thank you for this recipe. I’ve tried several while on keto and I have to say this is probably the best one I’ve had.
I made two so I just used the whole egg. I used Monk Fruit sweetener and cacao powder (same amounts).
Microwaved for 1:45-2:00 minutes.
Put 6-7 dried cherries in one. Yum. Poured heavy cream over cake rather than mess with making whipped cream. Also yum.
made this! so good! great, with keto ice cream on top.
Delicious
Followed directions carefully, had to add more water.
The batter lump stayed at the bottom of the cup.
Hi Bet Rae. I don’t know what happened. Did you fluff up the almond flour with a whisk and sift the cocoa powder BEFORE measuring? Also, what sweetener did you use? -Kim
Melt in your mouth goodness.
Fantastic keto chocolate mug cake. Best I’ve ever tasted!! Definately going in my keto saves. Thanks for keeping me on track.
Perfect every time! Thank you for this wonderful recipe!
Mine came out bitter.Could it have been the Stevia liquid?Wish I could find a sweetener that taste just like sugar!
Probably, Nina. That’s why I mention that it’s not a good idea to use stevia in the recipe. In fact, it’s the first thing I mention after the list of ingredients. Also, make sure that you sift the cocoa BEFORE measuring so you aren’t using double the amount of cocoa. You could try Ez Sweetz if you prefer a liquid sweetener (it’s liquid Splenda). -Kim
Actually, I was confused by your wording ‘Be very careful using only stevia to sweeten chocolate baked goods.’ … I read that as saying be very careful to only use stevia. PS: I made this for a friend and myself, and it was a hit!
This is the best keto cake recipe I’ve tried. Tastes just like a moist, decadent brownie!
A nice treat. Moist and fluffy. I added some whipped cream and thoroughly enjoyed it.
Umm, wow! Taste and texture like a ‘normal’ mug cake. Sceptical about the mayo but it completely works. Halved the sweetener and used Natvia (Australia). Added a 1/4 tsp vanilla essence. This is now my go to choc treat.
This was sooooo good! Made this today. Variations done: sour cream instead of mayo, whole egg and added no water, 4 teaspoons golden monkfruit sweetener instead of 1 Tablespoon low carb sugar. Plus added some bittersweet chocolate on top. Yummmm!
One of the best mug cake recipes I’ve yet to try while on my keto journey. Topped mine with whip cream and it was perfect for my sweet tooth!
I just got thru eating my cake and it was wonderful. I added in 2 tsp of PB2 powder. Next time I am going to add in some banana extract or instant coffee. Thanks so much!
Yum! Was searching cupboards for something sweet and instead swopped to search of the internet for a keto treat and found this recipe. OMG delicious! Put a spoon of hazelnut butter with it and so good and so allowed!
Mmm, tasty! My only suggestion is to add a drop of vanilla. It’s subtle but it adds to an already great mug cake.
For what it’s worth, using the barcode scanner of my nutrition app with my ingredients it came up with about 4 net carbs. Not far off at all!!
Very nice recipe. Easy to make and has a very soft texture.
I topped it with heavy whipping cream whipped with a drop of vanilla.
First Keto mug cake I have made and glad I made this my first! Really delicious. Added a cap full of natural orange oil to the mix and tasted like chocolate orange. Bit of double cream on top too.
The texture and flavor of this recipe is so good! I wanted it to be sweeter and the chocolate to be more pronounced so the second time I made it I modified a bit using dutch coco, 2 tbsp erythritol, cream instead of water, added sugar free hazelnut torani syrup, and a few sugar free chocolate chips. It was perfect. I did have to cook for 15 seconds longer. This is going to be my go to from now on! I’ve never had luck with mug cakes before but this one will be my go to from now on.
It came out good. The problem with mug cakes, is they look bad, so this was my solution…
I doubled the recipe to get around the ‘1/2 egg’ wasted problem. I put a cupcake liner in the bottom of the mug, and half the recipe into each liner. Microwaved it for 45 seconds, 2 cups at a time. Then I used a knife to loosen the cake from the edge of the cup, and inverted it onto a plate. I knew the top was delicate and would shred easily, so I used another paper liner to ‘touch’ it with.
The frosting is 2 tblsp powdered erythritol, 1 tsp cocoa, 1 tsp peanut butter, 1 tsp butter, and enough creamer to turn it into a frosting.
It made 4 cupcakes.
So, the first time I made this, it was good. The 2nd time, I used sour cream, added about a 1/4tsp of vanilla, a dash of salt, and a dash of cinnamon… beautiful! Either way, it helped calm my sweet cravings. Oh, and my microwave is only 700watt, so I had to cook for 1minute, 25 seconds.
This was awesome! I want to make this for my daughter who loves mug cakes, only with sugar. How much would you put? This had a really true cake flavor and texture and was great with
Swerve but she doesn’t have to eat sugar free like me.
If making for a child, you may want to use a little more sugar (maybe double?) in place of the low carb sweetener since kids prefer thing sweeter. -Kim
Amazing flavor and true cake texture
This was haven! Thank you so much for the recipe.
Delicious!! Totally satisfied my craving. I made it with strawberries and a few chocolate chips and my husband and I loved it!!
Best recipe I have found!!
Hi Kim! I tried the recipe, I used 1 whole egg. It turner out fine but not sweet at all. Hahaha … will IT be smart to add more sukrin?
If it’s not sweet enough for you, add more sweetener. Everyone had their preferred level of sweetness. -Kim
OMG this is hands down, the BEST mug cake I’ve ever had!!
This was my first time making a keto night cake and it was pretty good. I also have a sweet tooth but found this to be a little too sweet. I couldn’t finish it bc it was just so rich! And close to no bet carbs!!!! I love it! Next time I will put a little less sweetener and poke holes in it after cooking and pour some heavy whipping cream on top. Make it like a chocolate tres leches cake (but a keto uno leche cake 🍰😂)
I just made this yummy chocolate mug pudding, in Australia. I halved the sweetener, Erythritol, as I wanted to serve it with Keto icecream. Surprised to find mayonnaise in the recipe, but it was perfect. Made a half-mug, so there was room for the icecream. Perfect size!
The texture is perfect, however if you are a sugar addict like me, this will require a lot of sweetener. I mixed swerve and erythritol with minimal effect. It tasted as though there was no sweetener added. I will try doing a cream cheese and egg white “frosting” with stevia or monk fruit to help it along. But again, the texture is heaven!
I added a bit of almond extract and it was amazing!
So good. I even had to use Stevia and it was amazing. I’ve been trying recipes for a birthday cake all week. Your recipe is the only one I finished and licked the mug clean.
Angie
Thank you! Just what I needed on keto- cake!
this is my first time making mug cakes on keto, i accidentally put baking soda instead of baking powder it was extremely bitter. next time i should read more carefully and put baking powder.
Hi Elizabeth. If it’s bitter again, make sure you aren’t using stevia in your sweetener or use less cocoa powder. It could be the brand of cocoa powder is slightly bitter. -Kim
Great great great!
uh.ma.ziing!
I used 2 yolks in mine and added some sugar free chocolate chips and crushed pecans
Best mug cake I’ve have! I used truvia and didn’t turn bitter. Thanks!!
Very delicious BUT when I imported this recipe into Carb Manager it listed it as 16 net carbs. That’s a long way from the 3 net carbs listed.
Did anyone else find this?
Hi Wade. I have answered this question many times in the comments. My numbers are accurate. -Kim
Awesome mug cake! — the best I have had so far! If u add to Carb Manager app, edit the recipe and remove “sugar.” It’s using the real thing instead of Swerve
(Or whatever sugar substitute u used).
Delicious and easy….thank you!
This is the first time I’ve ever made the cake.
This was disgusting!
Hi Melissa. If you used a zippy mayonnaise, that may be why you didn’t like the cake. Either use a mayo more bland in flavor or try it with sour cream next time. I bought Sir Kensington mayonnaise the other day and it is very strongly flavored. It would not be a good choice for this recipe. I’ll make a note. -Kim
Absolutely amazing mug cake! Nervous about the mayo but followed the recipe exactly and it was perfect! Truly delicious. I have it with heavy whipped cream for the perfect dessert! Thank you for the awesome recipe!
This was so delicious! Thank you for this. Yummy!
Can I cook this in the oven?
Hi Tasha. You can…. I would use a toaster oven instead of a large oven just because the serving is small and the potential for over-baking is so great. I never tested it in the oven. I would try it at 325 F and watch it very carefully. Remember that glass containers heat slower but hold on to heat for an extended period of time resulting in up to 30 minutes plus of “carry over” cooking. Good luck. -Kim
This is a great recipe, but after making it quite a few times, I tried substituting coconut flour and I am just kicking myself at the catastrophe I made. 😩. Not doing that again….
This is the best chocolate mug cake I have tried so far. I put a few sugar free chocolate chips in the batter. Next time will save the egg white and try it that way. Thanks!
This is by far my favorite mug cake recipe. It hits the spot every time I crave chocolate. I am really starting to develop a taste for almond flour now, and it took a while. This recipe is absolutely my go-to, though, and I’m sure I’ll continue making it a weekly addition to my menu.
Wow, this is soooo good, 3 weeks into keto & I was so close to cracking when I thought to google “keto cakes” & thank goodness I did. The cake was so easy to put together with ingredients that most people would have on hand, a few stirs, 50secs in the microwave & then dig into chocolate heaven…I topped it with whipped cream & now I’m addicted!!!!
Great recipe. I will admit when I saw mayonnaise I was skeptical but so moist!!!! Thank you well done.
This is the first keto mug cake recipe that had the taste and moist, almost fudgy texture that I was looking for!
I topped mine with some Lily’s chocolate chips before putting it in the fridge! Delicious!
I just made this and it turned out great! It was tasty, the texture was nice, I added some sugar free chocolate chips and topped it off with some whipped topping.
Wow! Usually I don’t like what I make.
This is amazing! The flavor, the texture, the ease of preparation. I’m having it with coffee right now!
Yum 😋
Wonderful recipe base. I was forced to do some substitutes ( honey instead of granular sweetener as I was out of mink fruit and heavy cream instead of mayo+water, as my only mayo had seasonings added).
Other little fun things I added were a pinch of sea salt, a scattering if Lily’s chocolate chips, and a pinch of xanthan gum ( to be honest, not sure what that specifically did as far as texture, maybe next time I’ll skip it and see)
Whipped up some heavy cream for the top and it was absolutely amazing. Honestly, the only downside is the portion size always leaves me wanting more so I might just double each serving in the future.
The boys left us girls alone to go fish, well we can have ourselves some enjoyment too! So walked to the farmers market this evening to get eggs so we could whip these babies up.
Thank you for sharing this recipe!
Hi Jo. I’m glad you found some substitutions that work. Strange times… I hope the “boys” caught some fish although sometimes its the sitting and waiting that can be the best part. A walk down to the Farmer’s Market sounds idyllic. Be well. -Kim
Absolutely delish….I am so amazed at how quick it was to make and tastes really pleasant. This is a real motivator for me as I have a really bad sweet tooth and this is my motivation…something to look forward to at the end of the day!! have the egg white left over will give it a try with that tomorrow and hopefully use this as a base for other variations.
This was a great, quick recipe. I’m on my second week of Keto and just wanted something a little sweet and chocolatey and this hit the spot! I’ll definitely be making this again.
Bitter. I even went and bought the recommended sweetener. How can anyone eat this? I made it EXACTLY according to directions. I even doubled the sweetener…nope. Still bitter.
I recommend buying Lilly’s semisweet chocolate chips and adding some. It’s a game changer!
I’ve never reviewed a recipe before but having been keto for a few years and trying all the tricks for every imaginable recipe, I had to post about this one. This is the best mug cake I’ve had. By far! And I’ve made them all!!! I swapped out the water with coffee for an enhanced choc flavor and topped with a few sf choc chips, but it’s yummy just the way it is.
What size mug is best? Btw. The swerve you recommend is apparently not at all sweet. But the chocolatiness made up for it.
Hi CC. I recommend a smaller mug like 6-8 oz capacity. Everyone’s taste buds like a different level of sweetness. The amount specified in the recipes was sweet enough for me, but I understqnd that others may prefer things sweeter. Just add more sweetener. -Kim
This was absolutely incredible. Wow. How is this keto?! I made it with sour cream because that’s all I had on hand, and it was a 10 out of 10. I don’t even normally like almond flour but decided to give this recipe a try because of the amazing reviews and I am just blown away with how moist and flavorful It was. Thank you so much for this fantastic recipe!
I don’t understand your warning about using Stevia and it’s reaction with dark chocolate. Should you use Stevia or not??
Hi Alla. I wouldn’t use stevia to sweeten chocolate because it will make it bitter. However, some stevia products are less bitter. If you have stevia glycerite, it might be okay to add a few drops. I prefer to use the erythritol based sweeteners in this recipe. -Kimm
Easy, easy! It really took 3 minutes to make, 70 seconds to cook, and 5 minutes to eat it with…yes slices of butter and pecans!…and a slight drizzle of sugar free maple syrup! Aaaaamazing!!! I will try the peanut butter recipe tomorrow. This recipe is easy, simple, moist and tasty. Thank you!
Absolutely delicious!
I made this tonight for my husband and I for our keto diet, we absolutely loved it! It was the best tasting keto cake we’ve had. It was so moist and tasty! I put a few sugar-free chocolate chips on top before I put it in the microwave and then I topped it with whip cream and five fresh raspberries. It was heaven! We can’t wait to try the other two mug cakes! Thank you so much for the recipe!❤️
Don’t usually take the time to post comment when I make a recipe, not that any of the recipes I use are not good enough too, but I wanted to shout out and say how Delicious and perfect this recipe is! Kids even loved it! We made homemade keto whip cream for top. So good fighting myself not to make another one! Sweetener I used was swerve only bc I am out of monk fruit!
Deeeeelicious! I added a spoonful of sugar free preserves and then some whipped cream on top. It was moist and delicious. Better than non-keto mug cakes.
I definitely had my doubts…but just made this and it was outstanding!! Will certainly be a go to for me in the future!
Curious on the carbs. One spot it says 3 carbs, and where the nutrients are listed, it says 7?
Hi Debbie. The total carbs is 7g, the NET CARBS (total carbs minus fiber) is 3g. People who track total carbs do not subtract fiber and keep their total carb number just under 50g. People tracking net carbs subtract the grams of fiber from the total carb number and try to keep their carbs between 20-25 grams. The nutrition program I use tracts total carbs, so I also provide the net carb number. I hope this helps. -Kim
Just made this fabulous dessert, It was easy & came out perfectly. I used sour cream because I didn’t have Mayo. Wouldn’t change a thing! Just added some whipped cream.
I made this last night, double batch so I used the entire egg, microwaved for 90 seconds, followed the recipe exactly otherwise.
It. Was. Perfect.
I made it again tonight (regular size with yolk only), except I subbed plain Greek yogurt (full fat) for the mayonnaise (an attempt to cut calories) and added 1/8oz 100% cacao shavings and almond slivers. Not as good. The texture was crumbly, dry. Didn’t rise much. Not as palatable. Still springy though. Still ate it LOL
I’ll try next time with lite mayonnaise (if I don’t get around to making my own), but will DEFINITELY save this recipe for the future. Thank you for this, you saved my diet. As a recovering 26yr sugar addict, this isn’t just a daily struggle but sometimes an hourly one. 🙏 this helps.
Rose Summers, I hope you’re still on Keto. My suggestion is, make a list of recipes you’ve found online and tried, such as keto rum balls, carrot cake, tiramisu, chocolate mousse, fudge slice, and make one every week as your go to snack. I’ve been eating keto, well mostly, since late January and just hope to maintain my weight now. But I still need snacks sometimes. And there’s always peanuts or cooking chocolate if you need an instant boost.
Delicious! I drizzled heavy whipping cream over it and gobbled it up! Thank you!
I had my doubts because this seemed way too easy – and I was wrong! This was my first time ever, making a mug cake. It was easy, fast, delicious and hit the spot! I’m looking forward to trying out different variations. Thanks for an awesome recipe!! :)
I sent this recipe to my daughter but she doesn’t have a microwave. So I tried it in my toaster oven. Success! I cooked it for 18 min at 350 degrees. Slightly delayed gratification but no less sweet.
NICE!!! I won’t use a microwave either thank you!!!
Lord I had been having a lil trouble trying to find foods to eat n being a past time sugar junkie I came upon this recipe! Easy n soo delish thank u
I made it this morning and ended up having for breakfast with coffee. Definitely will become a staple for when the chocolate cravings hit.
I made two mug cakes; one had an egg yolk, the other I put the egg white. The one with the egg yolk was perfect. Had a fluffy texture that is still like cake. The one with the egg white, on the other hand, was more pudding-y in texture, like a more solid flan. Both tasted great but I prefer the one with the yolk because it’s more like cake. Thanks for sharing this!
I made these for my family using pecan flour and they were great, Next time I will grind the flour first because it was a little gritty and I will use a little more sweetener because it was not as sweet as I would have liked, Thank you for the great recipe.
Thank you for sharing this recipe! Can’t believe it turned out so good!! First time I really liked a low carb mug cake, definitely will do it again :)
Unbelievable! My sister is also low carb, I cant wait to make this for her! It’s so good.
This was fantastic! Had a great flavor and was very fluffy. I topped it with a couple fresh raspberries and a little whip cream. It was delightful! Thank you for this amazing recipe!
That was so good! Thanks for the recipe!
I made this for myself with the yoke and later with the egg white for my fiance. Both were amazing. Definitely and by far and away the best cake, never mind mug cake I have had.
Amazing! First Keto sweet treat I have actually liked. I didn’t have an swerve so I swapped out the tablespoon of water for a tablespoon of sugar free maple syrup. It was PERFECT. 10/10 will make again. Thank you.
Absolutely fabulous! The texture is perfect. I make a double batch and use the entire egg and either divide it into two 1 cup pyrex dishes or cook the entire thing in a 2 cup pyrex dish and save the rest for the next day. I love adding about 1 tablespoon of sugar free dark chocolate chips. Thank you for the recipe.
Outstanding. Added a touch of Sugar Free Hershey’s Syrup. Top it with Strawberry’s and a couple scoops of Halo Top Vanilla Bean. Outstanding. Now my go to for chocolate mug cake.
I LOVE this recipe! I can’t help but save my last 6-10 net carbs for the end of the day,double up the recipe (I add lakanto chocolate chips for the extra ingredient),make a frosting and watch a movie or my cat videos. LoL I gotta say.. it makes me so happy! And then,when my non-keto family makes boo-boo faces when I have my cake..even when they have the S.A.D. junk of thier own! Hey,I make it an option because they don’t want keto ..so…they make the choice to miss out on the.best.cake.ever!!!!
Best chocolate mug cake yet!
I liked this ok. I did put some cream over the top and added some no-sugar chocolate syrup. My husband did not like the texture of the cake, which was due to the almond flour. I’m going to try this using coconut flour.
The texture is perfect. Thanks for sharing this recipe.
If you make it ahead and later just add the wet ingredients, when measuring out to make a mug of it, how much dry do you add? 4 and 1/4 tbsp?
Make one serving and then measure it either by weighing or by tablespoons. Note it on your container so you know. -Kim
Loved your recipe! Very moist and hit the spot when I was craving something sweet on my low carb journey
Can I substitute the egg with something else? I have an egg allergy
Try some sour cream for the egg and and a little heavy cream for the mayo? -Kim
I’m also eating this as I type. I’ve never reviewed a recipe before but this is exactly what I needed. Weeks without anything sweet, I needed something to satisfy my craving that would be quick to make. Im adding this one to the list! This just made my day! Thank you.
I prepared this mug cake and added cocoa nibs in the center. Just moist and delicious.
I tried this and it turned out awwwesommme
Eating this as I comment…. I made mine in a huge wide coffee mug, so it didn’t puff up much, but the texture turned out more like a brwnie, and I am in heaven!! Thanks for the recipe…. love it!
If you replace the egg yolk with an egg white, won’t you still have the problem of a leftover egg yolk? Or did you mean that a whole egg can be used in place of the egg yolk?
Hi Abbi. If you use the egg yolk one night and have a leftover white, you can use the white to make the mug cake. The texture is just a little different, but it still tastes good. -Kim
I thought after my first taste of almond flour in another recipe I found on the internet, that I was done with it!
Having a chocolate cake craving and not wanting to bake a whole cake, I started searching. I stumbled upon your recipe and tried it. OH MY!!! Thank you for this recipe!
I love it! This will definitely be a staple in my low carb diet from now on.
Hi Tanya. Almond flour is really a beautiful alternative flour to work with. The quality of the recipe will make it or break it. With time you will learn which low carb keto blogs have good recipes and which don’t. Have fun finding low carb baking recipes you love! -Kim
I love this recipe but I love adding a tablespoon or so of heavy cream to the batter. I often add nuts too.
We have previously tried several keto mug cake recipes but gave up as all resulted in a cake that was weird tasting or had a strange texture or both. We came across your recipe and decided to try it due to the high ratings. Wow! We are so glad we did! The recipe was easy, the cake tasted great and the texture was just like any other cake. We put a layer of crushed raspberries on top and then topped that with keto whipped cream. It was the bomb! Thanks so much for the recipe and the techniques you use that make this such a success!
I will be travelling to Portugal to stay for 6 weeks.. I’m not sure if they have the sweeteners available there,so I plan to make a big batch mug cake (15) to take with me… I will multiply everything by 15 and put it in a double resealable baggy… How much would I use to make 1 at a time? Love your recipes…
Portugal sounds nice, Den. I do not know the answer to your question, but I would mix together enough for one serving and measure it before doing the big batch. Then you can write the proper measurement on the bag or your container. -Kim
Thanks for the reply Kim…Here is what I did … I made enough for 16 servings I used 2 cups of almond flour, 1 cup of cocoa powder, 1 cup Lakanto sweetener and 4 tsp. of baking powder to make the dry mix..
Then I followed your recipe and measured exactly as in your recipe for dry ingredients
4 tbsp.+ 1/4 tsp. of the dry mixture to which I added 1 egg yolk, 1 tbsp.mayo,1 tsp. water..
It turned out great.. I topped it with homemade keto nutella and whipped cream
Thanks again …very tasty easy recipe…I would have included a picture,but couldn’t seem to upload one..
Denise
Thanks Denise. I’ll try to add some of your info to the post/recipe a little later today. I don’t allow people to upload photos to the site or I would get all kinds of inappropriate pictures! Lol. Have a great day.
Omg yum! Will definitely be prepping the dry mixture into small containers so I can make them often. I was worried about the mayo but the whole thing was delicious. I topped mine with whipped cream.
Hi
What is the size of your mug? Would this work well in a 4 inch baking tin?
This cup was about 6-8 ounces. -Kim
Well I made this twice and made it into a two layer chocolate cake with chocolate ganache. It was yum.
This mug cake is super moist. I did taste the Mayo just a bit, but it was not overpowering. I would add a pinch of salt next time to help the chocolate flavor come out, but I will definitely be making this one again!
Can coconut flour be used in place of the Almond flour?
Very good. I made my husband’s with real sugar because he won’t use any other kind of sweetener, and he loved it. I used avocado oil instead of mayo, added maybe 1/2 tsp of homemade vanilla, and about 1/2 tbsp semi-sweet chocolate chips. So delicious and so very light and airy.
The best mug cake recipe I’ve come across on the net! To make it even MORE moist, fluffy and amazing, I replaced the water with a dash of almond milk. Also, I wanted to consume less calories so I swapped out the mayonnaise and used ricotta with a pinch of pink Himalayan salt and boy oh boy, its just perfect!! Add the rest of the mixture after you’ve microwaved a majority of it first… You’ll see why
Absolutely the BEST chocolate keto mug cake! The mayonnaise is the key for me.
Oh my good God! This is the best mug cake I have made so far, and I’ve been trying out reci’s for over SEVEN years!
Made this tonight, so yummy. I added 1/4 tsp of cake batter flavoring, 3 small cream cheese dollups and 5 .ghirardelli-60-cacao-baking-chips. Excellent fluffy consistency.
Another idea if feeling really frisky: a TBSP of diet Dr. Pepper. MOIST!
Oh my gosh! I made this small mug cake to enjoy while my son ate a slice of his favorite triple chocolate cake for his birthday. I have to share that I was very skeptical initially because I have made mug cakes before and have been extremely disappointed with the texture or the extremely eggy taste of the cake. I couldn’t have been more pleased with this cake; the texture was beautiful and there was no eggy taste whatsoever.
I did make a couple of tweaks to the recipe. Instead of using just the yolk I added the entire egg and I also added a generous tablespoon of Lily’s dark chocolate chips to the batter. after baking a cake in the microwave for 50 seconds as for the recipe I discovered the bottom half of the mug was still liquidy so I continued to zap the batter in the microwave at 10 minute increments until the runny batter was just set. After that I inverted the mug cake onto a serving plate and sprinkle the top with another generous tablespoon and a half of Lily’s dark chocolate chips which melted on top of the warm cake. the end result was delicious and decadent; I will definitely be making this again!
OOOPS! I meant to say 10 SECOND increments…NOT 10 MINUTE…