1 (2 lb.) bag frozen hash brown potatoes
1/2 c. onion, chopped
1/2 c. butter, melted (save half for top)
10 oz. Cheddar cheese, grated
1 can cream of chicken soup
1 tsp. salt
1/2 tsp. black pepper
1 c. sour cream
Bread crumbs

Mix all ingredients together except reserved butter and bread crumbs. Put in well greased casserole, sprinkle top with crumbs and bake 1 hour and 10 minutes in 350 degree oven.