Hash Brown Casserole - cooking recipe

Ingredients

1 bag frozen hash brown potatoes
1/2 onion, chopped
1/2 stick melted margarine
1 can cream of mushroom soup
8 oz. shredded cheese

Preparation

Layer in order listed in 9 x 13-inch pan.
Bake at 350\u00b0 covered for 35 to 45 minutes, until bubbly.