Hash Brown Casserole
["1 (2 lb.) bag frozen hash brown potatoes, thawed", "1/2 c. butter, melted", "1 tsp. salt", "1/2 tsp. black pepper", "1/2 c. chopped onion", "1 c. sour cream", "1 can cream of chicken soup", "8 oz. Cheddar cheese, grated"]
["Mix all ingredients in large bowl. Pour into two 9 x 9 x 2-inch pans or one 9 x 13 x 2-inch pan. If freezing is desired, do so at this point, then add topping before baking."]
["frozen hash brown potatoes", "butter", "salt", "black pepper", "onion", "sour cream", "cream of chicken soup", "Cheddar cheese"]