2 lbs. ground meat
1 sm. onion, chopped
1 (10 3/4 oz.) can cream of mushroom soup
6-8 slices American cheese
1 (2 lb.) bag frozen tater tots

Brown meat and onions; drain. Place meat mixture in baking dish. Pour soup over top. Top with cheese. Cover with tater tots. Bake at 450 until tater tots are browned.