Cook the Beef: In a large skillet, cook the ground beef over medium-high heat until it is browned. Season with salt and pepper during cooking. Once browned, drain any excess grease.
Season and Mix: Return the pan to the stove. Add the garlic powder and taco seasoning to the beef, stirring well to combine.
Add Ingredients: Incorporate the rice, beef broth, corn, tomato sauce, and salsa into the pan. Mix everything thoroughly.
Simmer: Bring the mixture to a boil. Once boiling, cover the pan, reduce the heat to low, and let it simmer for about 18-20 minutes, or until the rice is fully cooked and tender.
Add Cheese: Sprinkle the shredded cheese over the top of the casserole. Cover the pan again and let the cheese melt for about 2-3 minutes.
Serve: Once the cheese is melted, the casserole is ready to be served. Enjoy it hot, straight from the pot.
Variations and Substitutions
The beauty of this one-pot wonder is its adaptability. Here are some ideas for variations and substitutions to suit different tastes and dietary needs:

Protein Substitutes:
Ground Turkey or Chicken: Swap the ground beef for ground turkey or chicken for a leaner option.
Vegetarian Version: Use plant-based ground meat or crumbled tofu to make the dish vegetarian. Additionally, adding more beans such as black beans or pinto beans can enhance the protein content.
Seafood Twist: Shrimp can be a great alternative, offering a delightful twist to the traditional recipe.
Rice Alternatives:
Brown Rice: For a healthier option, use brown rice. Note that brown rice takes longer to cook, so adjust the cooking time and liquid accordingly.
Cauliflower Rice: For a low-carb version, use cauliflower rice. Since cauliflower rice cooks faster, add it later in the cooking process to avoid overcooking.
Vegetable Additions:
Bell Peppers: Add diced bell peppers for extra color and nutrients.
Zucchini or Squash: These can be diced and added to the mixture, providing a subtle sweetness and additional texture.
Spinach or Kale: Stir in some chopped spinach or kale towards the end of cooking for a nutrient boost.
Spice Level:
Mild: For a milder version, reduce the amount of taco seasoning or use a mild variety.
Spicy: Increase the heat by adding diced jalapeños, hot sauce, or using a spicy salsa.
Cheese Options:
Cheddar and Monterey Jack: Combine different cheeses for a richer flavor.
Pepper Jack: Use pepper jack cheese for an added kick of spice.
Vegan Cheese: Substitute with a plant-based cheese for a vegan-friendly dish.
Liquid Substitutions:
Chicken or Vegetable Broth: Use chicken or vegetable broth instead of beef broth to change the flavor profile.
Tomato Juice: For a richer tomato flavor, replace some of the broth with tomato juice.
Additional Toppings:
Avocado: Fresh avocado slices or guacamole can add a creamy texture.
Cilantro: Garnish with fresh cilantro for a burst of freshness.
Sour Cream: A dollop of sour cream can provide a cool contrast to the warm, spicy casserole.
Tortilla Chips: Crushed tortilla chips on top add a delightful crunch.
Conclusion
One Pot Mexican Rice Casserole is not just a meal; it’s a versatile canvas that invites creativity and personalization. Whether you are looking for a quick weeknight dinner, a dish to impress at a potluck, or a comforting meal on a chilly evening, this casserole fits the bill. Its ease of preparation and minimal cleanup make it an excellent choice for busy cooks, while its rich, robust flavors ensure it remains a family favorite. With endless possibilities for variations and substitutions, you can tailor it to meet your dietary preferences and tastes, making it a truly adaptable and delightful dish.