Hash Brown Casserole - cooking recipe

Ingredients

12 oz. grated cheese
1 (16 oz.) carton sour cream
1 can cream of mushroom soup
1 pkg. frozen hash browns
1 medium onion, sauteed in 1 stick butter

Preparation

Combine all ingredients and pour into a greased 9 x 13-inch casserole dish.
Bake at 350\u00b0 for 45 minutes.