In a large skillet, drizzle a bit of olive oil and heat over medium heat. Add the finely chopped onion and diced bell peppers. Sauté for approximately 4-5 minutes, or until the vegetables have softened and the onions are translucent.
Incorporate the minced garlic into the mixture, stirring and cooking for an additional minute until the garlic becomes fragrant.
Add the ground beef to the skillet, using a spatula to break it apart. Cook until the beef is browned and no longer pink, around 5-7 minutes. If there's excess fat in the skillet, drain it off.
Next, stir in the black beans, corn, diced tomatoes with green chilies, chili powder, ground cumin, smoked paprika, and a sprinkle of salt and pepper. Mix everything together thoroughly to combine all the flavors.
Transfer the beef and vegetable mixture into a greased 9x13 inch baking dish, spreading it out evenly.
Evenly distribute the shredded cheddar cheese over the beef mixture, allowing it to melt beautifully in the oven.
Carefully layer the frozen tater tots on top of the cheese, arranging them in a single layer for an even bake.
Place the casserole in the preheated oven and bake for about 30-35 minutes, or until the tater tots are golden brown and crispy on top.
Once baked, remove the casserole from the oven and allow it to cool for a few minutes before serving.
Notes
For a rustic feel, serve directly from the baking dish. Garnish with freshly chopped cilantro or sliced green onions.