Zippy Zucchini Frittata

Preheat oven to 350 degrees F. Lightly coat 12-inch pizza pan with cooking spray; set aside.

Spread shredded zucchini on large platter or shallow baking pan; sprinkle evenly with salt. Let stand for 15 minutes. Using paper towels, gently press excess moisture from zucchini.

Meanwhile, lightly coat small skillet with cooking spray; heat over medium-high heat. Add onion; cook until onion is tender. Remove from heat.

In large bowl, combine eggs, Parmesan cheese, flour, basil and pepper. Stir in shredded zucchini, cooked onion and mozzarella cheese. Pour into prepared pizza pan, spreading evenly.

Bake about 25 minutes or until top is lightly browned and eggs are set. Arrange zucchini slices on top of baked mixture; add tomato slices. If desired, sprinkle with olives and additional Parmesan cheese. Bake for 10 minutes more.