Rice Casserole - cooking recipe

Ingredients

1 c. rice, cooked
1 box frozen broccoli, thawed
1 large onion, chopped
2 sticks celery, chopped
1 c. mushrooms, chopped
1 stick margarine or butter

Preparation

Saute all the ingredients, except the rice.
Add salt and pepper to taste.
Mix together with cooked rice and 1/2 cup grated Cheddar cheese and 1 can cream of mushroom soup.
Grease a large casserole dish with butter.
Put ingredients in dish; sprinkle additional Cheddar cheese on top.
Bake at 350\u00b0 for 35 to 40 minutes.
May be put under broiler for a few minutes afterward.