Grate the cauliflower using a box grater until you have 2 cups of cauliflower crumbles.

Place in a large bowl and microwave for 7-8 minutes, or until soften. Remove and let cool.

Mix in the egg, mozzarella, Parmesan cheese, and salt and pepper.

Once combined, pat into a 10-inch round on the prepared pizza pan.

Spray lightly with non-stick spray and bake for 10-15 minutes, or until golden.