Step 1
Preheat oven to 425 degrees F (220 degrees C). Line a muffin tin with parchment paper squares.
Step 2
Grate cauliflower into a microwave-safe bowl using a fine grater. Chop up any remaining pieces that are too small to grate but too big for the crust.
Step 3
Microwave cauliflower until soft and tender 4 to 6 minutes. Pour cauliflower into a clean dish towel cool easily handled 15 to 20 minutes.
Step 4
Wrap the towel around the cauliflower and squeeze out as much liquid as possible; the drier the cauliflower is the better it will hold together as a crust once mixed with the other ingredients.
Step 5
Combine cauliflower 1 cup mozzarella cheese Parmesan cheese egg salt pepper garlic powder and onion powder in a large bowl.
Step 6
Scoop cauliflower crust mixture into prepared muffin tin dividing the mixture evenly among the cups. Pat down cauliflower mixture with the back of a spoon making it compact.
Step 7
Bake in the preheated oven until golden brown about 15 minutes.
Step 8
Spoon a small amount of pizza sauce onto each cauliflower crust. Top with remaining 1 1/2 cups mozzarella cheese dividing evenly among the crusts.
Step 9
Bake until golden brown and cheese is melted about 15 minutes. Let sit in pan for 5 minutes before moving each bite to a cooling rack. Let cool for 10 minutes. Peel parchment paper squares off the crusts and serve on a platter.