1 (9-inch) Pillsbury pie crust, baked and set aside
3 tablespoons butter or margarine
1 small onion, chopped
4 medium yellow squash, unpeeled and cut into thin slices
1 teaspoon sugar
Salt and pepper to taste
1/4 cup green onions, chopped
1/2 cup mayonnaise
1 egg, beaten
1 cup Cheddar cheese, grated
1 cup mozzarella cheese, grated
Sauté onion in butter until wilted.
Add sliced squash, sugar, salt and pepper. Cook for 3 to 5 minutes or just until squash is tender. Do not overcook.
Remove from heat; add green onions, mayonnaise and beaten egg.
Mix the two cheeses together. Spread one cup of the mixed cheeses in the bottom of the pie crust. Add squash mixture and top with remaining cheese mixture.
Bake in 350º oven for 25 to 30 minutes.