Creating Ground Beef Rice Casserole is simple when you follow this easy-to-understand process:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Cook the Beef: In a large skillet, over medium heat, brown the ground beef. Break it apart with a spatula as it cooks.
3. Add Aromatics: Once the beef is browned, add the diced onion and minced garlic. Sauté until the onion becomes translucent.
4. Stir in Spices: Add chili powder, cumin, salt, and pepper to the skillet, stirring to coat the beef and onion mixture.
5. Add Rice and Tomatoes: Pour in the long-grain rice and the can of diced tomatoes (including liquid), stirring everything together.
6. Combine Broth and Vegetables: Add beef broth and frozen mixed vegetables to the skillet, mixing until combined.
7. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it evenly.
8. Cover and Bake: Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes.
9. Uncover and Add Cheese: After 25 minutes, remove the foil and sprinkle shredded cheese on top. Bake for an additional 5-10 minutes until the cheese is melted and bubbly.
10. Garnish and Serve: Remove from the oven and let it sit for a few minutes. Garnish with fresh parsley if desired before serving.

By following these steps, you’ll create a delicious Ground Beef Rice Casserole that everyone will love.