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Chicken Fajita Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.2 from 78 reviews
  • Author: Deborah
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 4 servings
  • Category: Main Course
  • Method: Stovetop
  • Cuisine: Mexican
  • Diet: Gluten Free

Description

This Chicken Fajita Casserole is a vibrant and flavorful one-pan meal that combines sautéed bell peppers and onions with seasoned chicken, layered with corn tortillas and topped with melted Mexican cheese. Perfect for a quick weeknight dinner, it offers all the delicious fajita flavors in a comforting casserole format.


Ingredients

Scale

Vegetables

  • 1 red bell pepper, sliced
  • 1 yellow bell pepper, sliced
  • 1 medium onion, sliced

Spices and Oils

  • 1 tbsp avocado oil (plus 2 tbsp for drizzling)
  • 1 tbsp chili powder
  • 1 tsp ground cumin
  • 1 tsp garlic powder
  • ½ tsp salt
  • ½ tsp ground black pepper

Protein

  • 2 cups cooked chicken thighs, sliced

Other

  • 1 tbsp lime juice
  • 4 corn tortillas, cut into strips
  • 1 ½ cups shredded Mexican cheese blend


Instructions

  1. Preheat Oven: Preheat your oven to 400°F (200°C) to prepare for baking the casserole later.
  2. Sauté Vegetables: Heat 1 tablespoon of avocado oil in a large ovenproof skillet over medium-high heat. Add the sliced red and yellow bell peppers along with the onion. Cook, stirring occasionally, until the vegetables become tender and softened, about 5 minutes.
  3. Add Spices: In a small bowl, combine chili powder, ground cumin, garlic powder, salt, and black pepper. Sprinkle the spice mixture over the sautéed vegetables and stir well to coat evenly, enhancing the flavors.
  4. Add Chicken and Lime Juice: Stir in the cooked sliced chicken thighs and lime juice. Cook for an additional 2 minutes, allowing the chicken to heat through and absorb the spices.
  5. Layer Tortillas and Cheese: Remove the skillet from heat. Layer the corn tortilla strips evenly over the chicken and vegetable mixture. Drizzle 2 tablespoons of avocado oil on top, then sprinkle the shredded Mexican cheese blend evenly over the tortillas.
  6. Bake the Casserole: Place the ovenproof skillet in the preheated oven and bake for 10 minutes, or until the cheese is fully melted and bubbly, creating a delicious golden topping.
  7. Rest and Serve: Remove the casserole from the oven and let it rest for 5 minutes before serving. This allows the flavors to settle and makes serving easier.

Notes

  • Use an oven-safe skillet for seamless transition from stovetop to oven—cast iron works best.
  • For spicier casserole, add diced jalapeños or extra chili powder.
  • Leftovers keep well in the refrigerator for up to 3 days.
  • Use chicken breasts if preferred, but thighs add more flavor and moisture.
  • Gluten-free corn tortillas make this recipe naturally gluten-free.