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Chicken fajita casserole in a baking dish
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3.60 from 5 votes

Chicken Fajita Casserole

This Chicken Fajita Casserole has onions, bell peppers and fajita seasoning with melted cheese on top. This restaurant-quality dish is full of mouthwatering Mexican flavors, and it's ready in just 30 minutes!
Prep Time10 minutes
Cook Time20 minutes
Total Time30 minutes
Course: Main Course
Cuisine: Tex Mex
Keyword: chicken fajita casserole, fajita casserole
Servings: 6 servings
Calories: 327kcal
Author: TipBuzz

Ingredients

  • 1 ½ pounds boneless skinless chicken breasts split lengthwise, or chicken thigh (see note)
  • 3 bell peppers red, yellow or green capsicum, seeded and sliced into strips
  • 1 large yellow onion or two medium onions (or white onion)
  • 1 tablespoon olive oil
  • 8 oz Jack cheese shredded, or cheddar or Havarti (2 cups)
  • fresh cilantro optional garnish

Fajita Seasoning

  • 1 teaspoon cumin powder
  • 2 teaspoon chili powder
  • 1 1/2 teaspoon garlic powder
  • 2 teaspoon paprika
  • salt and pepper to taste

Instructions

  • Preheat the oven to 400°F (200°C) with the rack in the lower middle position. Turn on the convection/forced air if available.
  • Grease a 9x13” baking dish with oil and set aside. Arrange the split chicken breasts in a single layer in the prepared baking dish.
    Chicken fillets in a greased baking dish
  • In a small bowl, combine the cumin, chili powder, garlic powder, paprika, salt and pepper. Drizzle oil on top and sprinkle on half the fajita seasoning.
    Fajita seasoning on chicken breasts in a baking dish
  • Add the sliced onions and bell peppers on top of the chicken. Sprinkle the remaining seasoning on top.
    Onions and bell peppers on top of seasoned meat in a baking dish
  • Top with the shredded cheese and then place the casserole in the oven. Bake for 20-25 minutes or until the chicken reaches an internal temperature of 160°F (check by inserting an instant-read thermometer into the middle of a large piece.)
    Chicken fajita casserole with cheese on top ready to go into the oven
  • Garnish with optional cilantro and serve warm.
    Chicken fajita casserole in a baking dish

Notes

  • Fajita Seasoning: You’ll need 2 tablespoons of seasoning if using storebought or a premade mix.
  • Baking Time: Will be up to 5 minutes faster with convection turned on and using a glass or ceramic dish.
  • Spicy: To make it spicy, add up to 1 teaspoon of cayenne to the seasonings and/or 1 sliced jalapeño along with the peppers.
  • Make Ahead Tips: You can also make it ahead in the morning, cover with plastic wrap and refrigerate for up to one day before baking (add 10 minutes to baking time in this case). After baking, cool completely, cover with plastic wrap and refrigerate for up to 3 days. You can also freeze individual portions in airtight containers for up to 3 months.

Nutrition

Serving: 6oz | Calories: 327kcal | Carbohydrates: 8g | Protein: 35g | Fat: 17g | Saturated Fat: 8g | Cholesterol: 106mg | Sodium: 350mg | Potassium: 655mg | Fiber: 2g | Sugar: 4g | Vitamin A: 2714IU | Vitamin C: 79mg | Calcium: 303mg | Iron: 2mg | Net Carbs: 6g