Classic tater tot casserole

This recipe is great for leftover mashed potatoes or the rehydrated kind if you roll like that.

1 lb ground Beef
1 medium diced onion
1 can green beans
1 can cream of mushroom soup
2-3 cups of mashed potatoes-enough to make a thick layer on the bottom of baking dish

Brown ground beef with diced onion
Add green beans and cream of mushroom soup to meat and mix together
Smooth a layer of mashed potatoes at the bottom of a baking dish
Add grated cheese then the meat/veggie mix
Cover the casserole with tater tots

Bake uncovered at 350 degrees for 20-30 minutes or until the tots are crisp