Potato Casserole - cooking recipe

Ingredients

2 lb. bag hash brown potatoes
1/2 c. chopped onion, browned in butter
10 oz. grated Velveeta cheese
1 can mushroom soup
1/2 stick margarine (melted for onion)
salt and pepper
1/2 pt. sour cream

Preparation

Mix all together and pour in greased baking dish.
Bake 45 minutes at 350\u00b0.