1 1/2 lbs. ground beef or turkey
1 med. onion, chopped
1 can cream of mushroom soup
1 c. sour cream
1 can corn, drained
1/2 c. milk
10 slices American cheese
1 lg. bag tater tots

Crumble ground meat, uncooked, into 10x14 inch casserole. Add chopped onion and corn. Mix soup, sour cream, and milk. Pour over meat mixture. Top with triangles of cheese in one layer. Top entire casserole with tater tots. Bake at 350 degrees for 1 hour until bubbly.