Making the Cheesy Chicken Taco Casserole is straightforward. Just follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) to prepare for baking.
2. Blend Ingredients: In a large mixing bowl, combine the shredded chicken, black beans, corn, diced tomatoes, taco seasoning, sour cream, and one cup of cheddar cheese. Mix well until everything is well combined.
3. Prepare Baking Dish: Lightly grease a 9×13-inch baking dish with olive oil to prevent sticking.
4. Layer Ingredients: Spread half of the crushed tortilla chips evenly across the bottom of the prepared dish. Then pour the chicken mixture over the chips, spreading it evenly.
5. Add Salsa: Spread salsa over the chicken mixture, allowing it to seep into the layers below.
6. Top with Cheese: Sprinkle the remaining cheddar cheese on top of the casserole. Ensure it covers the whole surface for cheesy goodness.
7. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes or until the cheese is melted and bubbly.
8. Add Green Onions: If desired, sprinkle chopped green onions on top for extra flavor after removing it from the oven.
9. Cool Slightly: Allow the casserole to cool for about 5 minutes before serving to let the layers set.
10. Serve: Garnish with additional toppings like sour cream or avocado if desired.

These steps will help you create the perfect Cheesy Chicken Taco Casserole without any hassle!