Potato Casserole - cooking recipe

Ingredients

1 (2 lb.) bag hash brown potatoes
2 cans mushroom soup (undiluted)
1 can milk
1/2 stick butter
8 oz. sour cream
2 medium onions, cut up
salt and pepper to taste
mild Cheddar cheese (for topping)

Preparation

Combine all ingredients, except cheese, in dish.
Bake in a 350\u00b0 oven for one hour (plus or minus).
Add cheese.
Bake in oven for 10 minutes to melt cheese.