Hash Brown Casserole
["1 bag frozen hash browns, thawed", "1 can cream of chicken soup", "1 - 8 oz. container sour cream", "1 medium onion, chopped", "1 stick melted margarine", "Cheddar cheese, optional"]
["Mix all ingredients in large bowl. Spread in 9 x 13 inch casserole dish. Sprinkle cheese on top if desired. Bake at 350\u00b0 45 to 50 minutes."]
["cream of chicken soup", "sour cream", "onion", "margarine", "Cheddar cheese"]