Pierogi Casserole - cooking recipe

Ingredients

1 lb. elbow macaroni, cooked
1 lb. American cheese (may use 1/2 American and 1/2 Cooper sharp)
5 to 6 medium potatoes, cooked and mashed
1/2 lb. margarine
1/2 lb. butter
onions to taste

Preparation

Saute onions with butter and margarine.
Put 1/2 into bottom of dish.
Layer macaroni, cheese and potatoes (2 layers).
Top with rest of onion mix.
Bake 45 minutes at 350\u00b0.