Low Carb Lemon Bars full of bright, lemony flavor are a ketogenic dieter's dream! | Low carb, Gluten-free, Keto, THM

Low Carb Lemon Bars (sugar free)

These Low Carb Lemon Bars are sugar free and full of bright lemony flavor. They're a gluten-free, keto dieter's dream.
Course Dessert
Cuisine American
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 16
Calories 197kcal
Author lowcarbmaven.com



  • Prepare the Basic Shortbread Crust per instructions and bake at 350 on the bottom rack for 10 minutes. Let cool.
  • In a medium bowl, mix the sweetener, cornstarch (arrowroot) and salt together with a hand mixer. Add the eggs and yolks and mix thoroughly. Add the lemon juice and mix until the powdered sweetener is dissolved.
  • Pour the lemon mixture onto the cooled shortbread crust and bake for approximately 30 minutes or until the lemon custard is just cooked through.
  • NOTE: The macros you see for the crust are for the WHOLE crust! I have added the nutritional information from the crust recipe to this lemon bar recipe, so the nutritional information included both the crust and the lemon custard.


I use a 9x9 square pan, an 8x8 pan will produce thicker bars and may affect cooking time.
Nutrition Facts
Low Carb Lemon Bars (sugar free)
Amount Per Serving
Calories 197 Calories from Fat 126
% Daily Value*
Fat 14g22%
Saturated Fat 5g31%
Polyunsaturated Fat 2g
Monounsaturated Fat 6g
Cholesterol 108mg36%
Sodium 149mg6%
Potassium 128mg4%
Carbohydrates 5g2%
Fiber 1g4%
Protein 9g18%
Vitamin A 350IU7%
Vitamin C 9.9mg12%
Calcium 40mg4%
Iron 0.7mg4%
* Percent Daily Values are based on a 2000 calorie diet.


Calories: 197kcal | Carbohydrates: 5g | Protein: 9g | Fat: 14g | Saturated Fat: 5g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Cholesterol: 108mg | Sodium: 149mg | Potassium: 128mg | Fiber: 1g | Vitamin A: 350IU | Vitamin C: 9.9mg | Calcium: 40mg | Iron: 0.7mg