Casserole - cooking recipe

Ingredients

1 can cream of mushroom soup
1/2 c. milk
1 c. uncooked elbow macaroni
3 Tbsp. chopped onion
1 c. Cheddar cheese, cubed
4 oz. diced beef

Preparation

Mix ingredients and pour into buttered baking dish.
Cover and let set in refrigerator overnight (until it is a mush).
Bake, uncovered, in a 350\u00b0 oven for 1 hour.