Fajita Chicken Casserole

by Christina Cherrier – Updated Dec 26, 2020
Fajita Chicken Casserole
© Eatwell101.com

Fajita Chicken Casserole recipe – Packed with flavor and so quick to throw together! This chicken fajita casserole is delicious as it is nutritious. Loaded with juicy chicken, peppers and gooey cheese, seasoned with fajita spices and baked to perfection, this quick chicken casserole dinner is equally wholesome and tasty. Since it only has a few simple ingredients and is all baked in one dish, you can have the fajita chicken casserole prepped and to the oven in as little as 10 minutes. If you are looking for a simple and delicious meal idea, try this keto-friendly, low carb recipe tonight, it’s sure to impress the entire family. Enjoy!

Fajita Chicken Casserole Recipe recipe 2Photo credit: © Eatwell101.com

Ingredients list for the fajita chicken casserole

how to make chicken casserolePhoto credit: © Eatwell101.com

Baked Fajita Chicken CasserolePhoto credit: © Eatwell101.com

Fajita Chicken Casserole recipePhoto credit: © Eatwell101.com

best chicken casserolePhoto credit: © Eatwell101.com

Fajita Chicken CasserolePhoto credit: © Eatwell101.com

Oven Baked Fajita Chicken Casserole recipe 2Photo credit: © Eatwell101.com

Oven Baked Fajita Chicken Casserole 2Photo credit: © Eatwell101.com

baked chicken casserolePhoto credit: © Eatwell101.com

oven Baked Fajita Chicken CasserolePhoto credit: © Eatwell101.com

Fajita Chicken Casserole 2Photo credit: © Eatwell101.com


1. To make fajita chicken casserole recipe: Preheat your oven to 400°F (200°C). Lightly grease a baking dish.

2. Place chicken breasts on a shallow plate. Sprinkle cumin, chili powder, garlic, paprika, salt and pepper on both sides. Keep some of the spices for sprinkling over the vegetable.

3. Arrange chicken breasts into the prepared baking dish, and drizzle with oil. Top chicken breasts with the bell peppers and onion, then sprinkle some of the remaining fajita seasonings. Finish the casserole with shredded mozzarella cheese on top.

4. Bake the fajita chicken casserole for 20 – 30 minutes (if you split the chicken breasts lengthwise, or depending on the thickness); until chicken is cooked through and reaches an internal temperature of 165°F (74°C). You can broil your fajita chicken casserole for 2 minutes at the end to crisp up the top if you like. Serve the fajita chicken casserole immediately over cauliflower rice, steamed vegetable, zucchini noodles, or as is… enjoy!

Tips for the Fajita Chicken Casserole Recipe

  • You can bake the casserole without the cheese, and add it at the end before broiling the chicken casserole if you prefer.
  • If you like a meatier casserole, add chopped spicy sausage when cooking the Fajita chicken casserole.
  • You can cut the chicken breasts into cubes to speed up baking time.
  • Freeze individual portions of the fajita chicken casserole so you have a comforting dinner for evenings when you don’t feel like cooking from scratch.

What other readers say about this fajita chicken casserole recipe

“I didn’t measure seasoning but sprinkled liberally. It was delicious. Super easy and takes very little time. This one is a keeper!!!” – David

“I also used Mexican blend cheese and added shredded queso. The only other change was I used red, yellow, and orange peppers and left out the green and I didn’t measure the spices, just sprinkled generously. Especially the chili powder :) It was delicious!!” – Lauri

“Delicious! Family pleaser! Quick and easy! Picky eaters are ready for next time–no leftovers. Served the fajita chicken casserole over rice, with tostadas.” – Georgie

“100% recommend. I used boneless skinless chicken thighs instead of chicken breasts. Also added 4 cheese mexican instead of Mozzarella. If you’re in a pinch or don’t have all the seasonings, prepackaged Fajita seasoning works well too. For extra stuff, added sour cream and salsa to my personal plate and it was AMAZING” – Kelly

“OMG! This was excellent! I used chicken thighs instead of breasts and I cooked it 30 minutes instead of 20. Chicken was moist and cooked perfect. I used pepperjack cheese. Will definitely make this again!” – Chris

More chicken casserole recipes

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  • Krista

    2021-01-22 19:28:36

    Be prepared to cook this for around an hour. After 30 minutes cooking time, we took it out of the oven and the chicken was still completely raw. We split two chicken breasts in half. We even put a oven thermometer in the oven thinking our oven was on the fritz, but it was at 400 degrees. We covered with foil during the second half hour of cooking so the cheese wouldn’t get further burned. After an hour of cooking the chicken was cooked, but the cheese cooked down quite a bit. Otherwise the recipe is really tasty!

  • Linda

    2020-12-26 19:04:15

    I am constantly looking for easy and healthy recipes since I cook for my elderly parents weekly. I found this recipe and since my dad loves fajitas, I decided to try it. I boiled the chicken, so that it would be soft for them to eat and I didn't put the chili powder or pepper, because they don't like spicy. I added 1/2 can crushed tomatoes on top of the chicken and went light on the cheese. They loved it! I've made it for my kids and they love it as well, this is a new family favorite. I think I've made it 4 times in the past two weeks for my parents and us!

  • Britney

    2020-11-12 19:53:00

    Excellent dish! A new favourite!!

  • Corliss Readcorli

    2020-11-05 05:32:18

    Loving this

  • Andrea

    2020-11-04 17:33:34

    I made this recipe and it came out so delicious! I used boneless breast and split them in half, I served it with a side of cauliflower rice. It would be part of my menu from now on!

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Fajita Chicken Casserole - #chicken #casserole #recipe #eatwell101 - Packed with flavor and so quick to throw together! This chicken fajita casserole is delicious as it is nutritious.
Fajita Chicken Casserole - #chicken #casserole #recipe #eatwell101 - Packed with flavor and so quick to throw together! This chicken fajita casserole is delicious as it is nutritious.
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