In a large bowl combine:
2 lb package frozen hash browns, thawed
16 oz carton sour cream
10 3/4 oz can cream of chicken soup
1 small onion, chopped
8 oz shredded cheddar cheese (2 cups)
Put in an ungreased 9x13 pan.
Bake uncovered @ 350 for about an hour.
Serve warm.
