Broccoli Casserole - cooking recipe

Ingredients

10 oz. frozen broccoli, chopped
1 stick butter
1/3 c. chopped onion
1 can cream of mushroom soup
1 c. instant rice
1 (10 oz.) pkg. cheese slices

Preparation

Mix all ingredients together except cheese.
Pour into a 9 x 13-inch baking dish.
Layer cheese on top and bake at 350\u00b0 for 1 hour.