Hashbrown Casserole

1 pkt Hash browns 

1 pint sour cream 

1 cup cheddar cheese

salt and pepper to taste

1 medium onion diced

1 can cream of celery soup

1/2 cup butter

1 cup corn flakes 

Mix all ingredients together except the cornflakes and butter. Place in greased Pyrex glass dish.  Bake for 40 minutes.  Mix melted butter and cornflakes together.  Spread over top the casserole.  Bake for another 20 minutes.