This easy Chicken Fajita Casserole is a great weeknight family dinner recipe! Seasoned Chicken Breasts are cooked with cheese, onions and peppers for an authentic Tex-Mex experience. It’s even Keto friendly!
Tex-Mex Dishes
Just like a lot of families, we have our fair share of Taco Tuesdays in our house. And, don’t get me wrong, we love them. But sometimes they get a little boring. So, I’m always looking to find new and fun ways to get that “South-of-the-Border” flavor for my family. We’ve made our Crock Pot Mexican Chicken Casserole, which not only is a great family dinner, but is also a great way to feed a crowd too! And we’ve also found a way to combine Mexican and Italian Dishes with these recipes for Taco Lasagna and Taco Spaghetti!
Today, we’ve got another way for your to add a little spice to your family dinners with this Chicken Fajita Casserole!
Chicken Fajita Casserole
We love this recipe for Chicken Fajita Casserole because it is quick, easy and doesn’t have a ton of “bad stuff” in it. I’ve seen versions of this recipe made with Cream Cheese, Sour Cream or Cream of Chicken Soup in it. Our version keeps it pretty simple and healthy. Here is what you will need:
- Ground cumin
- Paprika
- Chili powder
- Garlic powder
- Dried oregano
- Salt
- Onion powder
- Red pepper flakes
- Ground pepper
- Chicken breast, cut into bite-size pieces
- Lime
- Vegetable oil
- Red bell pepper, sliced into thin strips
- Yellow bell pepper, sliced into thin strips
- Green bell pepper, sliced into thin strips
- Onion, sliced into thin strips
- Shredded Monterrey jack cheese
- Flour tortillas for serving
Notes, Tips and Variations
- GARNISH- Top with Parsley, Green Onions or Fresh Cilantro for a garnish.
- ADD SOME FLAIR- This recipe would be delicious with some Sour Cream, Avocado or Guacamole on top!
- CHICKEN THIGHS- Sub the Chicken Breasts for some boneless skinless Chicken Thighs. Chicken Thighs will cook much more tender.
- ADD/SUB VEGGIES?- Yep, I know that Chicken Fajitas normally consist of chicken, bell peppers and onions. But who’s to say you can’t add some other fun stuff. My wife isn’t a huge fan of Green Peppers, so maybe next time we can get rid of these and add a can of drained Black Beans or Corn.
- KETO FRIENDLY- We suggest serving this with some flour tortillas, but this would also be delicious on a bed of lettuce or even just all by itself!
I hope you enjoy this recipe for Chicken Fajita Casserole. Let your Taco Tuesdays never be boring again!

Chicken Fajita Casserole
Ingredients
- 2 teaspoons ground cumin
- 2 teaspoons paprika
- 1 teaspoon chili powder
- 1 teaspoon garlic powder
- 1 teaspoon dried oregano
- ½ teaspoon salt
- ½ teaspoon onion powder
- ½ teaspoon red pepper flakes
- ¼ teaspoon ground pepper
- 1.5 pounds chicken breast cut into bite-size pieces
- The juice of one lime
- ½ tablespoon vegetable oil
- 1 red bell pepper sliced into thin strips
- 1 yellow bell pepper sliced into thin strips
- 1 green bell pepper sliced into thin strips
- 1 onion sliced into thin strips
- 1 cup shredded Monterrey jack cheese
- Flour tortillas for serving
Instructions
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Preheat the oven to 375 degrees and grease a baking dish with nonstick cooking spray.
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Combine the cumin, paprika, chili powder, garlic powder, oregano, salt, onion powder, red pepper flakes, and pepper in a small bowl.
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Layer the chicken in the bottom of the baking dish. Add the lime juice, vegetable oil, and half the seasoning mixture. Toss to coat the chicken.
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Top the chicken with the peppers and onions. Sprinkle the remaining seasoning mixture over the top of the vegetables.
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Sprinkle the cheese over the top of the casserole.
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Cover and bake in the preheated oven for 30 minutes, then remove the cover and cook an additional 5 to 10 minutes.
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Serve with flour tortillas, if desired.
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