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Chicken Fajitas Casserole

This savory, cheesy Chicken Fajitas Casserole is a staple chicken dinner recipe in our house. It’s such an easy way to make deconstructed chicken fajitas!

top view of chicken fajita casserole in an oval baking dish topped with melted cheese

The Easiest Ever Way to Make Chicken Fajitas

This chicken fajitas casserole is filled with peppers, cheese and homemade seasonings. You won’t believe how easy it is to make! If you’re looking to spice up your chiken dinners, this recipe is a great place to start. All it takes is a handful of fresh ingredients to turn basic baked chicken breasts into flavorful chicken fajitas.

Recipe Ingredients

There are tons of ways to make this recipe your own, but here’s what I use to make my favorite chicken fajitas:

  • Baked Chicken Breasts: I recommend making my Juicy Oven Baked Chicken Breasts for the best baked chicken! Or, you can always just use that rotisserie chicken from your local grocery store.
  • Olive Oil
  • Green Pepper
  • Red Pepper
  • Yellow Onion
  • Salt
  • Cream Cheese
  • Cheddar Cheese: I love using white and yellow cheddar for this recipe, but you can definitely opt for your favorite shredded cheese.
  • Fajita Seasoning Mix: You can’t go wrong with my 5 Minute Homemade Fajita Seasoning.
  • Salt & Pepper
  • Fresh Cilantro: Parsley works too! Use your favorite garnish.
bell pepper strips arranged over shredded chicken in an oval baking dish

How to Make Chicken Fajitas Casserole

This casserole comes together in no time with your pre-cooked chicken breasts. It’s the perfect meal-prep chicken dinner!

  1. Preheat the Oven: Set your oven to 350˚F and lightly grease a 9×13 baking dish with cooking spray.
  2. Shred Chicken: Shred the baked chicken breasts and then transfer to a large mixing bowl; set aside.
  3. Heat Oil: Heat olive oil in a skillet set over medium-high heat.
  4. Cook Peppers & Onions: Add peppers and onions to the hot oil; sprinkle with salt and cook for 4 to 5 minutes, or until softened. Remove from heat and add to the chicken. Set aside.
  5. Make Seasoning: In a large bowl, combine cream cheese, half of shredded cheese, fajitas seasoning mix, salt, and pepper. Mix until thoroughly combined.
  6. Add to Chicken: Add cream cheese mixture to the chicken and peppers; mix until everything is well combined.
  7. Assemble: Transfer chicken mixture to previously prepared baking dish and sprinkle with remaining shredded cheddar cheese.
  8. Bake: Bake for 25 to 30 minutes, or until hot and bubbly, and cheese is melted.
  9. Garnish & Serve: Remove from oven and garnish with chopped cilantro or parsley.
shredded cheese sprinkled over chicken and peppers in a white oval baking dish

Tips for the Best Fajitas

  • Make Homemade Seasoning for Best Flavor: I highly recommend making my easy homemade fajita seasoning. It only adds a few minutes to this recipe, and the flavor it provides is well worth it. You will never want to use store-bought fajita seasoning again.
  • Shred Chicken to Your Liking: If you want a chunkier chicken casserole, you can cut your baked chicken breasts into cubes rather than shredding them. It’s completely up to you and your preferences.
  • Add More Meat if You Want: You can easily make these chicken fajitas into a meat-lovers casserole! Try adding sliced sausage, ham, bacon or any other meats you love.

Serving Suggestions

This recipe is so versatile and fun to play around with. There are also tons of sides that taste amazing with these chicken fajitas!

  • Beans: Pair your casserole with a classic side of refried beans. Green beans are also a tasty option! My personal favorites are these Lemon Butter Green Beans or these slow-cooked Green Beans and Tomatoes.
  • Rice: Another classic combination for chicken fajitas is rice. I often pair this recipe with my Creamy Garlic Butter Parmesan Rice.
  • Tortillas: Make these fajitas into tacos, burritos, and quesadillas! Both corn and flour tortillas work well for this. Add diced tomato, avocado and salsa if you like.
close up view of a chicken fajita casserole in a white oval baking dish

How to Store and Reheat Leftovers

  • You can easily store your leftovers in the refrigerator for 3-4 days. Just place them in an airtight container.
  • Reheat individual servings in the microwave to your preferred temperature.
  • You can also store your leftovers in the freezer where they’ll last for a good month or two. When you’re ready to reheat them, let your fajitas thaw out on the counter and then bake until the cheese starts to bubble.
top view of chicken fajita casserole in an oval baking dish topped with melted cheese
Print Recipe
4.67 from 6 votes

Chicken Fajitas Casserole

This spicy, savory and cheesy Chicken Fajitas Casserole is a staple chicken dinner recipe. It's such an easy way to make chicken fajitas that will have everyone asking for the recipe!
Prep Time10 mins
Cook Time25 mins
Total Time35 mins
Course: Dinner
Cuisine: Mexican
Keyword: chicken casserole, chicken casserole recipe, chicken fajitas, chicken fajitas recipe, chicken fajitas seasoning, how to make chicken fajitas, mexican chicken casserole
Servings: 4
Calories: 604kcal
Author: Katerina

Equipment

  • Stove
  • Oven

Ingredients

  • 1 pound cooked boneless, skinless chicken breasts, shredded
  • 1 tablespoon olive oil
  • 1 small green bell pepper, sliced into thin strips
  • 1 small red bell pepper, sliced into thin strips
  • 1 small yellow onion, thinly sliced
  • 1/4 teaspoon salt
  • 8 ounces cream cheese, softened, cut up into pieces for easier mixing
  • 8 ounces shredded cheddar cheese
  • 1 1/2 tablespoons fajita seasoning mix
  • salt and fresh ground pepper, to taste
  • fresh cilantro or parsley, for garnish

Instructions

  • Preheat oven to 350˚F.
  • Lightly grease a 9×13 baking dish with cooking spray; set aside.
  • Shred the baked chicken breasts and then transfer to a large mixing bowl; set aside.
  • Heat olive oil in a skillet set over medium-high heat.
  • Add strips of peppers and onions to the hot oil; sprinkle with salt and cook for 4 to 5 minutes, or until softened. Stir frequently.
  • Remove from heat and add to the chicken. Set aside.
  • In a large bowl combine cream cheese, HALF of shredded cheese, fajitas seasoning mix, salt, and pepper; mix until thoroughly combined.
  • Add sour cream mixture to the chicken and peppers; mix until everything is well combined.
  • Transfer chicken mixture to previously prepared baking dish.
  • Sprinkle with remaining shredded cheddar cheese and bake for 25 to 30 minutes, or until hot and bubbly, and cheese is melted.
  • Remove from oven and garnish with chopped cilantro or parsley. Serve and enjoy!

Nutrition

Calories: 604kcal | Carbohydrates: 8g | Protein: 42g | Fat: 45g | Saturated Fat: 24g | Cholesterol: 194mg | Sodium: 813mg | Potassium: 661mg | Fiber: 1g | Sugar: 4g | Vitamin A: 2051IU | Vitamin C: 41mg | Calcium: 489mg | Iron: 2mg

14 Comments

  • Jen
    August 10, 2020 at 7:09 pm

    5 stars
    I loved how easy this was to make! Thank you for getting us out of our chicken dinner routine rut. We’ll definitely be making this again.

    Reply
    • Katerina Petrovska
      August 11, 2020 at 3:08 pm

      I am very glad you enjoyed it! Thank you so much!! 🙂

      Reply
  • Mike
    August 10, 2020 at 8:13 pm

    I’m sorry, but I’m a little confused. In step 8, you say to “Add sour cream mixture to the chicken and peppers; mix until everything is well combined.” I’ve re-read the recipe three times now, and can’t see any other mention of “sour cream.” Am I just not seeing it, or do you mean the cream cheese mixture? I’m sorry if this is a dumb question, but I’m not good at cooking, so I need really clear instructions. Thank you for any help you can offer.

    Reply
    • Katerina
      August 11, 2020 at 1:09 pm

      Hi!
      You’re absolutely right; I meant to say “cream cheese mixture”. SO sorry about that!

      Reply
  • Sara Welch
    August 10, 2020 at 9:33 pm

    5 stars
    Tried this for dinner last night and it did not disappoint! Easily, a new favorite casserole recipe!

    Reply
    • Katerina Petrovska
      August 11, 2020 at 3:07 pm

      That’s wonderful! I am very glad you enjoyed it! Thank YOU! 🙂

      Reply
  • Dorothy Reinhold
    August 11, 2020 at 1:46 am

    My crew is going to flip for this casserole! I love that you added the creaminess of the cream cheese! Perfection.

    Reply
    • Katerina Petrovska
      August 11, 2020 at 3:06 pm

      Thank you so much, Dorothy! I hope you and your family enjoy it! 🙂

      Reply
  • Allyson Zea
    August 11, 2020 at 12:51 pm

    5 stars
    This casserole was so easy and delicious! Everyone had seconds1

    Reply
    • Katerina Petrovska
      August 11, 2020 at 3:06 pm

      That’s great! I am very glad you enjoyed it! Thank YOU! 🙂

      Reply
  • Catalina
    August 11, 2020 at 3:58 pm

    5 stars
    Sounds like an easy and super tasty dinner idea!

    Reply
    • Katerina Petrovska
      August 12, 2020 at 4:39 pm

      I hope you enjoy it! Thank YOU! 🙂

      Reply
  • JAD
    September 5, 2020 at 12:24 am

    4 stars
    I made this casserole tonight (04SEP2020). While the flavors are good, the casserole is very dry. Next time, I will try adding chicken broth (or chicken stock) to the dish (probably 1/4 cup).

    Reply
  • penny
    September 16, 2020 at 3:44 pm

    4 stars
    I really enjoyed following the other links regarding the fajita mix and the chicken..however I really couldn’t bring myself to use so much cheese as it sounded like a heart attack waiting to happen haha so I used 100 grams of light philadelphia cheese and about the same of cheddar cheese along with a cup of chicken stock. So this was a healthier but still very tasty version.

    Reply

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