American Pierogie

1 cup elbow macaroni (cooked)
3 medium potatoes (cooked and mashed)
¼ pound American cheese (grated)
1 onion, chopped
1 stick margarine

Melt margarine. Add onion and saute until golden brown. In ungreased baking dish, lay macaroni, potatoes, and cheese. Pour melted margarine on top.

Bake at 375 degrees for 30 minutes.