Speedy Lunch Casserole

1 Can Cream of Mushroom 1 Cup Cheddar Cheese, shredded
1/2 Cup Milk 2 Cup Macaroni, cooked
1 1/2 Cup Ground Beef, cooked 2 Tbsp Bread Crumbs
1/4 Cup Onion, diced

In a medium bowl mix soup, milk, beef, onion, 1/2 cup cheese and macaroni. Put mixture in an 8×8 baking dish. Top with remaining cheese and bread crumbs. Bake at 350 for 20 minutes or until bubbly.