Fajita Chicken Breasts Casserole


  • 4 boneless, skinless chicken breasts
  • 1 tablespoon olive oil
  • 1 packet fajita seasoning mix
  • 1 red bell pepper, sliced
  • 1 yellow bell pepper, sliced
  • 1 green bell pepper, sliced
  • 1 large onion, thinly sliced
  • 1 cup cherry tomatoes, halved
  • 1 cup shredded Mexican blend cheese
  • 1 cup sour cream
  • 1 cup salsa
  • 1 teaspoon ground cumin
  • 1 teaspoon chili powder
  • Salt and pepper to taste
  • Fresh cilantro, chopped (for garnish)
  • Tortilla chips (optional, for serving)


  1. Preheat the Oven: Preheat your oven to 375°F (190°C).
  2. Prepare the Chicken:
    • Season the chicken breasts with salt, pepper, and a portion of the fajita seasoning mix.
    • In a large skillet, heat olive oil over medium-high heat. Add the seasoned chicken breasts and cook until browned on both sides but not fully cooked through. Set aside.
  3. Sauté Vegetables:
    • In the same skillet, add the sliced bell peppers and onion. Sauté until the vegetables are slightly softened and have a nice caramelized color.
    • Stir in the cherry tomatoes and cook for an additional 2 minutes.
  4. Prepare Chicken Fajita Mix:
    • Slice the partially cooked chicken breasts into thin strips.
    • Toss the chicken strips back into the skillet with the sautéed vegetables.
    • Sprinkle the remaining fajita seasoning mix, ground cumin, and chili powder over the chicken and vegetables. Stir to coat evenly.
  5. Assemble the Casserole:
    • In a greased baking dish, layer the chicken and vegetable mixture evenly.
    • Pour salsa over the top, spreading it evenly.
    • Dollop sour cream over the salsa.
    • Sprinkle shredded Mexican blend cheese on top of the casserole.
  6. Bake in the Oven:
    • Place the casserole in the preheated oven and bake for 25-30 minutes or until the chicken is cooked through and the cheese is melted and bubbly.
  7. Serve:
    • Remove the casserole from the oven and let it rest for a few minutes.
    • Garnish with freshly chopped cilantro.
    • Serve the Fajita Chicken Breasts Casserole hot, either on its own or with tortilla chips on the side for added crunch.
  8. Enjoy!
    • Dive into this flavorful and hearty Fajita Chicken Breasts Casserole, a delicious twist on classic fajitas that’s sure to become a family favorite.

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