Tater tot casserole is a classic comfort food dish that is easy to make and always satisfying. In this recipe, tater tots are combined with ground beef, onions, and a creamy sauce made with cream of mushroom soup. The casserole is then baked in the air fryer until the tater tots are crispy and the filling is bubbly and delicious. Serve this hearty casserole as a main course with a side salad for a complete and comforting meal.