Combine potatoes, 1/2 cup melted butter, onion, soup, sour cream, and cheese. Stir well and spoon into casserole dish.
32 Oz Package Frozen Shredded Hash Brown Potatoes, 1/2 Cup Onion, 1 Can Cream of Chicken Soup, 8 Oz Carton Sour Cream, 1 Cup Shredded Cheddar Cheese