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Chicken Fajita Casserole

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Chicken Fajita Casserole transforms sizzling Tex-Mex fajita flavors into a baked, cheesy, one-pan meal. Juicy chicken, bell peppers, onions, and a smoky homemade fajita seasoning come together for an easy and colorful dinner everyone will love.

  • Total Time: 50 minutes
  • Yield: 6 servings

Ingredients

  • 1 ½ pounds boneless, skinless chicken breasts or thighs, cut into strips
  • 3 large bell peppers (red, yellow, green), sliced
  • 1 large onion, sliced
  • 2 cups shredded cheese (cheddar, Monterey Jack, or pepper jack)
  • 1 can (10 oz) diced tomatoes with green chilies, drained
  • 2 tbsp olive oil
  • Juice of 1 lime
  • Fresh cilantro, chopped (for garnish)
  • Homemade Fajita Seasoning:
  • 2 tsp chili powder
  • 1 tsp smoked paprika
  • 1 tsp ground cumin
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • ½ tsp dried oregano
  • ¼ tsp cayenne pepper (adjust to taste)
  • Salt and black pepper to taste

Instructions

  1. Preheat oven to 400°F (200°C) and lightly grease a 9×13-inch baking dish.
  2. In a large bowl, mix chicken strips with olive oil, lime juice, and fajita seasoning. Let marinate for 10–15 minutes.
  3. Add sliced peppers and onion to the bowl and toss until evenly coated.
  4. Layer half of the chicken and vegetables into the baking dish, followed by half the tomatoes and 1 cup of cheese.
  5. Repeat with the remaining chicken, vegetables, tomatoes, and cheese.
  6. Cover with foil and bake for 20 minutes.
  7. Uncover and bake an additional 10–15 minutes until the cheese is melted and golden.
  8. Optional: broil for 2–3 minutes for extra browning.
  9. Garnish with chopped cilantro and serve with tortillas, rice, or your favorite toppings.

Notes

  • Make it vegetarian by substituting chicken with mushrooms, black beans, or zucchini.
  • Double the cheese for an ultra-cheesy version.
  • Serve over rice with corn, beans, and avocado for fajita bowls.
  • Use cauliflower rice or greens for a low-carb option.
  • Marinate chicken overnight for deeper flavor.
  • Author: Amelia
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Main Course
  • Method: Baking
  • Cuisine: Tex-Mex
  • Diet: Gluten Free

Nutrition

  • Serving Size: 1 serving
  • Calories: 420
  • Sugar: 5g
  • Sodium: 710mg
  • Fat: 25g
  • Saturated Fat: 10g
  • Unsaturated Fat: 13g
  • Trans Fat: 0g
  • Carbohydrates: 12g
  • Fiber: 3g
  • Protein: 35g
  • Cholesterol: 105mg