This classic tater tot casserole combines seasoned ground beef, creamy sauce, and melted cheese topped with crispy golden tater tots for a comforting, family-friendly meal.
Preheat oven to 375°F (190°C) and grease a 9x13-inch baking dish.
Brown ground beef in a skillet over medium-high heat, breaking it apart as it cooks.
Add diced onion and cook until softened, then stir in garlic and cook briefly.
Drain excess fat and remove from heat. Stir in cream of mushroom soup and sour cream until combined.
Fold in 1 cup shredded cheese and season with salt and pepper.
Spread mixture evenly into prepared baking dish.
Arrange frozen tater tots in an even layer on top.
Sprinkle remaining cheese over the top.
Bake covered for 25 minutes, then uncover and bake 15–20 minutes until golden and crispy.
Let rest 5 minutes before serving.
Notes
Arrange tater tots in rows for even crispiness. Let casserole rest 5 minutes before serving. Store leftovers in the refrigerator for 3–4 days or freeze up to 3 months. Reheat uncovered at the end to restore crispiness.