Preheat oven to 400
Spray a 9 inch deep pie plate with non stick spray.
Add zucchini, tomato, onion and cheeses to dish.
Beat eggs, add Bisquick and milk, salt and pepper to taste. Pour over veggies.
Bake at 400 for 25-35 minutes or until a knife inserted in the center comes out clean
Let sit 7-10 minutes before serving