Panic Button Casserole

Ingredients
- 1 10 12 can cream of mushroom soup
- 1 c milk
- 1 c uncooked macaroni
- 3 Tbsp chopped onion
- 14 lb dried beef cut into bite-sized pieces
- 1 c finely chopped cheese
Directions
- Stir soup to creamy consistency add remaining ingredients except cheese
- Turn into buttered 1 12-quart baking dish Sprinkle cheese on top
- Cover refrigerate for at least 3 hours or overnight
- Uncover
- Bake for 1 hour at 350