Sheila'S Potato Casserole
["1 (20 oz.) bag hash browns (diced)", "1 can cream of chicken soup", "1 (8 oz.) sour cream", "1/2 c. chopped onion", "1 stick margarine", "8 oz. Cheddar cheese, shredded"]
["Saute onion in margarine in skillet. Add to rest of ingredients in a rectangular dish; cook at 350\u00b0 for 1 hour."]
["hash browns", "cream of chicken soup", "sour cream", "onion", "margarine", "Cheddar cheese"]