Another casserole that's a staple at our house. Easy to make and reheats well - when there's leftovers. This can be modified several different ways - use your imagination! I don't add onions to the hamburger due to picky eaters but feel free to add them to yours! I've used several different types of cheese - whatever I have on hand - but cheddar seems to be the favorite. I've used regular tater tots, mini tater tots and tater rounds - they all work!