Preheat oven to 400. Grease a 9 inch pie plate and layer the zucchini, tomato, onion, and cheese in the plate. Mix the remaining ingrediants until well blended. Pour this mixture on top of the other ingrediants in the pie plate. Bake about 35 minutes or until knife comes out clean when inserted. Let set for 5 minutes and eat.
You add any additional spices....I love to add a sprinkle of garlic and oregano.