Preheat your oven to 400°F. Lightly grease a 9x13-inch baking dish.
In a large skillet over medium heat, cook the ground beef until browned. Drain any excess fat.
1 pound ground beef
Add the chopped onion and bell pepper to the skillet with the beef. Cook until the vegetables are tender, about 5 minutes.
1 small onion, 1 bell pepper
Stir in the corn, black beans, diced tomatoes with green chilies, and taco seasoning. Cook for another 2-3 minutes until everything is well combined and heated through.
15 ounces canned corn, 15 ounces can black beans, 10 ounces diced tomatoes with green chilies, 1 ounce taco seasoning
Transfer the beef mixture to the prepared baking dish. Sprinkle the shredded cheddar cheese evenly over the top.
1 cup shredded cheddar cheese