01 -
Set the oven temperature to 190°C (375°F) to preheat.
02 -
Cook ground beef in a large skillet over medium heat until fully browned. Drain excess fat.
03 -
Add black beans, corn, cream of mushroom soup, garlic powder, onion powder, salt, and pepper to the skillet. Stir thoroughly and heat until mixture is warm throughout.
04 -
In a bowl, mix shredded cheddar and mozzarella cheeses. Set aside half for topping later.
05 -
Transfer the beef and bean mixture evenly into a 23x33 cm (9x13 inch) baking dish. Spread half of the cheese mixture evenly over the top.
06 -
Arrange frozen tater tots in a single, uniform layer over the cheese.
07 -
Bake in preheated oven for 30 minutes or until tater tots turn golden brown and crisp.
08 -
Remove casserole from oven, sprinkle reserved cheese on top, and return to oven for an additional 5 minutes until cheese melts and bubbles.
09 -
Optionally, garnish with chopped green onions before serving.