1 lb. frozen hash browns, thawed
1/2 stick butter, at room temperature
1/2 c. chopped onion
1 tsp. salt
1/2 tsp. pepper
1 can cream of chicken soup
1 1/2 c. shredded Cheddar cheese
1 c. sour cream

TOPPING:

2 c. finely crushed corn flakes
1/2 c. melted butter

Mix above. Pour into large baking dish. Top with topping mixture. Bake at 400 degrees for 1 hour. Leave covered when baking until last 10 to 15 minutes. Can be refrigerated overnight before cooking. If refrigerated, put topping on just before baking.