Creating an incredible Chicken Fajita Casserole is simple when you follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Sauté Vegetables: In a large skillet, heat a splash of olive oil over medium heat. Add sliced onion and bell peppers. Sauté until tender, about 5 minutes.
3. Prepare Chicken: Add the shredded chicken, black beans, corn, fajita seasoning, and salt and pepper to the skillet. Stir to combine all ingredients and heat through for about 3-5 minutes.
4. Layer Ingredients: In a greased casserole dish, layer half of the tortilla strips evenly on the bottom. Add half of the chicken mixture followed by a layer of salsa. Sprinkle with one cup of shredded cheese.
5. Repeat Layers: Repeat the layers with the remaining tortillas, chicken mixture, salsa, and top with the last cup of cheese.
6. Bake: Cover the casserole with aluminum foil and bake in the preheated oven for 20 minutes. Then, remove the foil and bake for another 10 minutes or until the cheese is bubbly and melted.
7. Rest the Casserole: Once removed from the oven, allow the casserole to rest for about 5 minutes before serving.

These straightforward steps will guide you in creating a Chicken Fajita Casserole that is sure to impress!