Preheat oven to 425 F and place rack in middle position. Line a large rimmed baking sheet with parchment. Place metal cutting blade in food processor.
Empty bag of thawed cauliflower rice onto a clean, smooth, tea towel and squeeze out as much water as you can. Fluff up with your fingers.
In a microwave safe bowl, melt mozzarella and cream cheeses together for 1 minute. Stir and melt at 30 second intervals into molten. Scrape the cheese into the food processor and add the egg white. Process until smooth.
Add the remaining ingredients and process until they come together in a ball.
With a rubber spatula, scrape the cauliflower crust dough onto the middle of the parchment lined baking sheet.
Pat the dough into a 10-inch circle, making sure that it is evenly distributed.
Place the cauliflower pizza crust into the oven and bake for 8-10 minutes or until gently browned on one side. Flip the crust over and bake for and addition 8-10 minutes. Watch the crust carefully as not to burn the cheese.
Top the pizza with your favorite toppings and return to the oven for 3-5 minutes or until the cheese has melted. Serve with a salad.
Serves two people at 6.56 NET CARBS per serving. (Just for the crust)