1 avocado, peeled, sliced 2 pounds tomatoes 6 tablespoons canned tomato sauce 12 ounces low-fat mozzarella cheese, grated 2 tablespoons grated Parmesan cheese 1/2 cup chopped fresh basil 1/2 cup diced green bell peppers 1/2 cup sliced mushrooms 2 (10 ounce) packages frozen pizza dough Salt, to taste Black pepper, to taste |