Ingredients
Meat Mixture
- 1 tablespoon (15 ml) olive oil (not extra virgin)
 - 1 ½ pounds (620 g) ground beef (90/10 lean)
 - 1 medium yellow onion, diced
 - 2 cloves garlic, minced
 - 2 tablespoons taco seasoning (homemade or store-bought)
 - 1 10-oz can (280 g) ROTEL fire-roasted tomatoes and green chilies (do not drain)
 - 1 15.5-oz can (400 g) pinto beans, drained (Berlotti beans in the UK)
 - 2 cups frozen corn
 - Salt to taste
 - 2 cups (224 g) shredded cheddar cheese
 
Cornbread Topping
- 1 – 8.5-oz package (240 g) Jiffy Corn muffin mix
 - 1 large egg, at room temperature
 - ⅓ cup (80 ml) whole milk
 - 2 tablespoons (26 g) unsalted butter, melted
 
Instructions
- Preheat the Oven: Preheat your oven to 350°F (180°C), or 160°C if using a fan oven to ensure even baking.
 - Cook Meat and Vegetables: Heat olive oil in a 12-inch (30 cm) oven-proof cast iron skillet over medium-high heat. Add ground beef and diced onion, breaking up the meat, and cook until browned, about 10 minutes. Add minced garlic and cook for 30 seconds until fragrant.
 - Season the Meat: Stir in taco seasoning and 2 tablespoons of water, cooking for 2 minutes to evenly coat the mixture with flavor.
 - Add Beans and Corn: Mix in the diced tomatoes with green chilies (undrained), drained pinto beans, and frozen corn. Stir and cook together for about 3 minutes, then remove from heat. Taste and season with salt if necessary.
 - Prepare Baking Dish: If your skillet is not oven-proof, transfer the meat and vegetable mixture to a 9×13 inch (33 x 22 cm) baking pan. Sprinkle the shredded cheddar cheese evenly over the meat mixture.
 - Make Cornbread Batter: In a separate bowl, combine the Jiffy Corn muffin mix with the egg, whole milk, and melted butter. Stir until just combined.
 - Assemble the Casserole: Spoon the cornbread batter evenly over the meat and cheese layer, spreading gently to cover the surface as uniformly as possible.
 - Bake: Place the skillet or baking dish in the preheated oven and bake for 25-30 minutes until the cornbread topping is puffed and lightly browned.
 - Rest and Serve: Remove the casserole from the oven and allow it to cool for 5 minutes before serving. Garnish with chopped cilantro and a dollop of sour cream if desired for added flavor.
 
Notes
- Use a cast iron skillet for best results and easy cleanup, but a 9×13 baking dish works as well.
 - The taco seasoning can be homemade or store-bought depending on your preference.
 - Do not drain the canned tomatoes and chilies to keep the casserole moist and flavorful.
 - Letting the casserole rest before serving helps the cornbread set for cleaner slices.
 - Optional toppings such as chopped cilantro and sour cream add freshness and creaminess to the dish.
 
- Prep Time: 10 minutes
 - Cook Time: 45 minutes
 - Category: Casserole
 - Method: Baking
 - Cuisine: Tex-Mex