Follow these easy steps to create your Sour Cream Chicken Enchilada Casserole:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Chicken Mixture: In a large bowl, combine shredded chicken, sour cream, salsa, black beans, corn, garlic powder, onion powder, chili powder, cumin, salt, and pepper. Mix until thoroughly combined.
3. Grease the Baking Dish: Lightly grease a 9×13-inch baking dish with cooking spray or olive oil.
4. Layer Tortillas: Place a layer of tortillas at the bottom of the dish to create the first layer.
5. Add Chicken Mixture: Spread half of the chicken mixture over the tortillas, followed by a layer of shredded cheese.
6. Repeat Layers: Add another layer of tortillas, the remaining chicken mixture, and another layer of cheese. Finish with a final layer of tortillas on top, followed by the remaining cheese.
7. Cover and Bake: Cover the dish with aluminum foil and bake for 20 minutes. Then, remove the foil and bake for an additional 10-15 minutes or until the cheese is bubbly and golden.
8. Cool and Garnish: Once cooked, remove from the oven and let it cool for about 10 minutes. Garnish with fresh cilantro, if desired.
9. Slice and Serve: Cut into squares and serve warm.

These steps will guide you through preparing this delectable sour cream chicken enchilada casserole effortlessly. You’ll appreciate the blend of flavors that come together in every bite.