Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). This ensures that your casserole cooks evenly.

Step 2: Cook the Ground Beef

In a large skillet over medium heat, add the ground beef. Cook until browned, breaking it apart with a spatula as it cooks. Drain any excess fat.

Step 3: Sauté the Vegetables

Add the chopped onion and minced garlic to the skillet with the beef. Sauté until the onion is translucent, about 3-4 minutes. This will enhance the flavors of the dish.

Step 4: Mix in the Ingredients

Stir in the rice, black beans, diced tomatoes with their juices, corn, beef broth, chili powder, cumin, paprika, salt, and black pepper. Mix well to combine all ingredients.

Step 5: Bake the Casserole

Transfer the mixture to a greased 9×13 inch baking dish. Cover the dish with aluminum foil and bake for 30 minutes. After 30 minutes, remove the foil and sprinkle shredded cheddar cheese on top. Return the casserole to the oven and bake for an additional 10-15 minutes, until the cheese is melted and bubbly.