Creating your Cheesy Walking Taco Casserole is easy if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Beef: In a large skillet over medium heat, brown the ground beef until fully cooked. Drain any excess fat.
3. Add Seasoning: Stir in the taco seasoning and salsa, mixing well to combine. Cook for an additional 2-3 minutes until heated through.
4. Layer Ingredients: In a greased casserole dish, layer the crushed tortilla chips at the bottom.
5. Add Beef Mixture: Spread the seasoned beef mixture evenly over the chips.
6. Add Black Beans and Corn: Sprinkle the black beans and corn over the beef layer.
7. Top with Cheese: Generously sprinkle shredded cheddar cheese on top of the mixture.
8. Bake: Place the casserole in the preheated oven and bake for about 20-25 minutes, or until the cheese is melted and bubbly.
9. Prepare Toppings: While the casserole is baking, prepare your toppings. Dice tomatoes, slice green onions, and avocado if desired.
10. Serve: Remove the casserole from the oven and let it cool for a few minutes. Top with sour cream, diced tomatoes, green onions, avocado, and cilantro before serving.

Following these steps will lead you to a perfect Cheesy Walking Taco Casserole that’s both delicious and satisfying.