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Home » Main Dish » Chicken Fajita Casserole

Published: Oct 31, 2022 by Kathy · This post may contain affiliate links

Chicken Fajita Casserole

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A chicken taco topped with sliced jalapenos.

A delicious, flavor packed and easy to make casserole filled with chicken, sweet bell peppers and onions. This Chicken Fajita Casserole is perfect for weeknight family dinners.

Everything you love about traditional fajitas in an easy to make dish!

Strips of chicken, peppers and onions in a baked casserole.
Table of Contents
Fajitas
Key ingredients
Step by step directions
Time saving tips
Frequently asked questions
Serving suggestions
More chicken casseroles
Chicken Fajita Casserole

Fajitas

I love ordering fajitas when we go out to our favorite Mexican restaurant. There's so much flavor and I love piling everything into a flour tortilla and eating it like a taco.

Making chicken fajitas at home isn't difficult when you make them in a casserole form. Everything gets tossed in a fajita spice mixture, then piled into a casserole dish and baked.

It's that easy! Everything is perfectly cooked and you even get a bit of that charring on the edges.

Chicken fajita casserole is easy enough for weeknight dinners and I even have a few make ahead tips to make getting dinner on the table a bit easier!

Key ingredients

Bowls filled with sliced peppers, chicken, shredded cheese and fajita seasoning.
  • Chicken - Use 1 ½ - 2 pounds of boneless, skinless chicken breasts or thighs. Slice chicken into strips about 1 inch thick.
  • Bell Peppers - I like to use red, yellow or orange bell peppers because they are sweeter than green bell peppers. Use whatever type you prefer. You'll need 2-3 bell peppers.
  • Onion - Use a large yellow or white onion. Slice onion into long strips.
  • Cheese - I used a mixture of cheddar and jack cheese. You can use all cheddar or all jack if you prefer.
  • Fajita Seasoning - Homemade seasoning is my preference, but store bought works too! You could also use taco seasoning (there is very little difference between the two) and sometimes we need to use what we already have on hand.

Step by step directions

The complete recipe and ingredients can be found at the bottom of this page in a printable recipe card.

  • Slice peppers, onion and chicken into long strips.
  • Place one tablespoon of fajita seasoning in a bowl along with one tablespoon of olive oil. Mix well.
  • Add chicken and stir until chicken is completely covered with the seasoning. I use clean hands to really make certain the chicken is well coated.
Fajita seasoning in a bowl with oil.
Chicken strips covered with seasoning.
  • Place chicken in a greased casserole dish.
  • Add the remaining one tablespoon of seasoning along with one tablespoon of oil into the same bowl. Mix peppers and onions so they are well coated.
  • Add peppers and onions to casserole dish.
Chicken in a casserole dish.
Peppers and onions in a casserole dish.
  • Sprinkle shredded cheese over the top of casserole.
  • Bake in a preheated 350°F oven for 30-35 minutes until chicken is cooked through.
  • Remove from oven, top with fresh cilantro and serve hot with warmed flour tortillas and toppings.

Time saving tips

  • Pre-slice your chicken, peppers and onions ahead of time. Store separately in the refrigerator until ready to use.
  • Have all your toppings cut and put into individual bowls ahead of time. Cover and then bring out just before the casserole is fully baked.
  • Five minutes before the chicken fajitas are done, heat your tortillas on a cast iron griddle.
  • Serve right from the casserole dish. No need to transfer to another dish.

Frequently asked questions

How long does leftover chicken fajita casserole last?

Once cool, store any leftovers in an airtight container in the refrigerator for 3-4 days.

What's the best way to reheat leftover chicken fajita casserole?

Dish out a single portion into a microwave safe container. Heat in microwave for 1-2 minutes until heated through. Stir contents after one minute.

Can I freeze chicken fajitas?

Yes, once this casserole is fully cooked, allow it to cool. Then cover with a layer of plastic wrap and then a layer of foil. Freeze for up to one month.

Serving suggestions

  • Refried Beans
  • Cilantro Lime Rice
  • Guacamole
  • Salsa

More chicken casseroles

  • Chicken Pasta Bake
  • Broccoli Chicken Alfredo Bake
  • Chicken and Rice
  • Chicken, Broccoli and Rice
  • Green Chile, Chicken and Rice
  • Chicken Enchiladas
Chicken fajitas in a flour tortilla.

If you make this recipe, I’d love to hear about it! Leave a comment below and snap a picture and tag me on Instagram @beyondthechickencoop

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Strips of chicken, peppers and onions in a baked casserole.

Chicken Fajita Casserole

Kathy
An easy to make casserole dish with strips of chicken, bell peppers and onions.
5 from 37 votes
Print Recipe Pin Recipe Save Saved!
Prep Time 10 mins
Cook Time 30 mins
Total Time 40 mins
Course Main Dish
Cuisine Mexican
Servings 6 people
Calories 146 kcal

Equipment

  • 9 x 13" Baking Dish
Prevent your screen from going dark

Ingredients
  

  • 2 chicken breasts (sliced into 1 inch strips)
  • 2 bell peppers (red and yellow) (sliced into strips)
  • 1 medium sized onion (yellow or white) (slice into strips)
  • 2 tablespoons fajita seasoning (separated)
  • 2 tablespoons olive oil (separated)
  • 1 cup shredded cheese (cheddar, or a blend)

Serving Suggestions

  • 12 small flour tortillas (optional)
  • sour cream (optional)
  • finely diced tomatoes (optional)
  • diced avocado (optional)
  • cilantro leaves (optional)
  • sliced jalapenos (optional)

Instructions
 

  • Place one tablespoon of fajita seasoning in a bowl along with one tablespoon of olive oil. Mix well.
    2 tablespoons fajita seasoning, 2 tablespoons olive oil
  • Add chicken and stir until chicken is completely covered with the seasoning. I use clean hands to really make certain the chicken is well coated.
    2 chicken breasts
  • Place chicken in a greased 9 x 13 inch casserole dish.
  • Add the remaining one tablespoon of seasoning along with one tablespoon of oil into the same bowl. Mix peppers and onions so they are well coated.
  • Add peppers and onions to casserole dish.
    2 bell peppers (red and yellow), 1 medium sized onion (yellow or white)
  • Sprinkle shredded cheese over the top of casserole.
    1 cup shredded cheese
  • Bake uncovered in a preheated 350°F oven for 30-35 minutes until chicken is cooked through.
  • Remove from oven, top with fresh cilantro and serve hot with warmed flour tortillas and toppings.

Notes

Time Saving Tips:
  • Pre-slice your chicken, peppers and onions ahead of time. Store separately in the refrigerator until ready to use.
  • Have all your toppings cut and put into individual bowls ahead of time. Cover and then bring out just before the casserole is fully baked.
  • Five minutes before the chicken fajitas are done, heat your tortillas on a cast iron griddle.
  • Serve right from the casserole dish. No need to transfer to another dish.

Nutritional Disclaimer:

Nutritional information is provided as a courtesy and should only be construed as an estimate rather than a guarantee. To obtain the most precise nutritional information in a provided recipe, you should calculate the nutritional information with the exact ingredients you are using when preparing the recipe using your preferred nutrition calculator.

Nutrition

Calories: 146kcalCarbohydrates: 5gProtein: 17gFat: 7gSaturated Fat: 1gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gTrans Fat: 0.01gCholesterol: 48mgSodium: 157mgPotassium: 389mgFiber: 1gSugar: 3gVitamin A: 1343IUVitamin C: 53mgCalcium: 11mgIron: 1mg
Keyword chicken casserole, chicken fajitas
Tried this Recipe? Tag me Today!Mention @BeyondTheChickenCoop or tag #beyondthechickencoop!

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Reader Interactions

Comments

  1. Valentina says

    November 07, 2022 at 5:02 pm

    Such a great casserole idea. I'll take mine on the cilantro lime rice, please. 🙂 ~Valentina

    Reply
    • Kathy says

      November 07, 2022 at 6:31 pm

      Yes!!! And it goes perfectly with the fajita casserole! 🙂

      Reply
  2. David @ Spiced says

    November 03, 2022 at 5:04 am

    5 stars
    Oh, you've got me craving fajitas like there's no tomorrow now! Fajitas are always one of my go-to options at Mexican restaurants, too. (Mental note - we need to find a new Mexican restaurant here in Asheville...I miss our old one, and we haven't gone out for Mexican in a long time!) In the meantime, though, I think I need to make this casserole. It looks cheesy in the best way possible!

    Reply
    • Kathy says

      November 03, 2022 at 6:32 am

      Thanks! This is one of those really easy meals that everyone loves!

      Reply

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I'm Kathy, a busy working mom who loves to cook from scratch, grow a garden, and raise farm animals. Take a look around and find all my recipes, gardening tips, and country living antics.

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More about me →

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