Zucchini Crust Pizza

Preheat oven to 450°. In a large bowl, combine first 4 ingredients; stir in 1/2 cup mozzarella cheese and 1/4 cup Parmesan cheese. Transfer to a 12-in. pizza pan coated generously with cooking spray; spread to an 11-in. circle., Bake until golden brown, 13-16 minutes. Reduce oven setting to 400°. Sprinkle with remaining mozzarella cheese; top with tomatoes, onion, pepper, herbs and remaining Parmesan cheese. Bake until edge is golden brown and cheese is melted, 10-15 minutes. Sprinkle with chopped fresh basil, if desired.