Preheat the oven: Set your oven to 375°F (190°C) to ensure it warms up while you prepare the ingredients.
Cook the meat: In a large skillet over medium heat, add the ground beef. Use a wooden spoon to break it apart as it cooks, about 5-7 minutes, until it’s fully browned and no longer pink.
Add flavor: Stir in the taco seasoning, black beans, and corn into the skillet. Cook for an additional 2-3 minutes, stirring occasionally until all components are heated through.
Prepare the baking dish: Lightly spray a 9x13 inch baking dish with cooking spray to prevent sticking. Arrange the tortillas by laying them on the bottom of the dish, overlapping them slightly to create a solid base.
Layer the fillings: Spoon the meat mixture evenly over the tortillas, then generously drizzle the salsa over the top.
Cheesy layering: Sprinkle half of the shredded cheddar cheese over the mixture. Place more tortillas on top, creating a second layer. Repeat the process of adding the meat mixture, salsa, and cheese until all ingredients are used. Finish with a final layer of tortillas topped with the remaining cheese for a deliciously cheesy crust.
Bake: Cover the dish with aluminum foil to keep the moisture in and bake in the preheated oven for 25 minutes. After this time, remove the foil and continue baking for an additional 10-15 minutes, or until the cheese is bubbly and golden brown.
Rest and garnish: Once baked, carefully remove the dish from the oven and allow it to cool for about 5 minutes. Top with the diced avocado and sprinkle chopped fresh cilantro for a burst of flavor and color.
Serve: For a perfect finishing touch, serve the tacos hot with dollops of sour cream on the side and lime wedges for squeezing over the top.
Notes
Consider serving the tacos directly from the baking dish for a rustic presentation.