Cauliflower Mini Pizza

Name: Cauliflower Mini Pizza
Ingredients: 1 head cauliflower; 2 cloves garlic, pressed or minced; 1 cup 2% mozzarella cheese, shredded; 1 egg beaten; 1 tsp Italian seasoning; 1 tsp oregano; 16 pieces turkey pepperoni; 1/2 cup shredded part-skim mozzarella cheese; 8 oz tomato sauce