1 (9 inch) pie crust
1/2 c. milk
1 tbsp. cornstarch
8 oz. shredded sharp cheddar cheese
1/3 c. chopped green onions
2 eggs
1/2 c. mayonnaise
1/2 lb. browned hamburger
1/2 c. fresh sliced mushrooms (optional)

Mix together eggs, milk and mayonnaise. Add remaining ingredients. Turn into pie crust and bake in preheated 375 degree oven for 40 minutes or until inserted knife blade comes out clean.