Tatertot Casserole

1 tablespoon butter
1 small onion (chopped)
1 lb lean ground beef
1 (10 ounce) can any cream soup
1/4 cup frozen peas
1/4 cup frozen carrots
1/2 cup frozen corn
3 cups frozen frozen tater tots
1 cup shredded cheddar cheese

Preheat over to 350 degrees.
Melt butter and saute onion 2-3 minutes.
Brown hamburger meat. Drain.
Add soup, peas, carrots, and corn.
Stir well on stove for 5 minutes.
Place mixture in 8x8 glass baking dish.
Spread the 3 cups of frozen tater tots evenly on top of mixture.
Bake on center rack for thirty minutes.
Remove from oven and spread cheddar cheese evenly over tater tots.
Place back in over for 10 minutes.
Remove from oven and serve.