1 bag tater tots
1 can cream of mushroom soup
1 onion
3 c. shredded Cheddar cheese
1 sm. container sour cream
1 sm. jar Cheez Whiz

Layer tater tots in a casserole dish. Mix cream of mushroom soup, sour cream, diced onion, and 2 cups or shredded Cheddar cheese. Layer on top of tater tots. Top with Cheez Whiz and 1 cup of shredded Cheddar cheese. Bake at 350 degrees for 50 minutes.