Preheat oven
Preheat oven to 400°F (200°C). Lightly grease a 9×13-inch baking dish.
Cook the beef
Brown ground beef in a skillet over medium heat with salt, pepper, garlic powder, and onion powder. Drain excess grease.
Add creamy base
Stir cream of mushroom soup into the beef until evenly combined.
Assemble casserole
Spread beef mixture evenly into the baking dish. Sprinkle shredded cheese on top.
Add tater tots
Arrange frozen tater tots evenly over the cheese layer.
Bake
Bake uncovered for 30–35 minutes, until tater tots are golden and crispy.
Serve
Let rest for 5 minutes before serving.