Potato Casserole

1 (2 lb) pkg. frozen hash brown potatoes, thawed
1/2 c. onion, chopped
1/2 tsp pepper
1 tsp salt
10oz American cheese, grated
1 pt. sour cream
1 can cream of chicken soup
2 c. Corn Flakes, crushed
1/2 c. butter, melted

Mix all ingredients together except Corn Flakes and butter. Put into greased casserole dish. Top with 2 cups crushed Corn Flakes mixed with 1/2 cup melted butter. Bake in 350 degree oven for 45 minutes.