Chicken Fajita Casserole

5 from 5 votes

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This fast and easy Chicken Fajita Casserole uses the same great flavors of Mexican chicken fajitas in a one dish creamy meal!
The meal being scooped out of a white square dish

This Chicken Fajita Casserole is ready in just 30 minutes! A creamy, cheesy casserole packed with chicken, bell peppers, onions, cheese, and classic fajita flavors.

The meal being scooped out of a white square dish

This Chicken Fajita Casserole is inspired by my Citrus Chicken Fajitas!

I love making fajitas, but wanted to make an alternative option that was faster and easy for busy nights.

The meal in a baking dish and on a plate with limes and salsa next to it
A spoon scooping Chicken Fajita Casserole out of the dish

Ingredient Options

I am a big believer in modifying ingredients as you need to for what you have or can get.

For this Chicken Fajita Casserole, I like to use chicken breasts but any cut of chicken works. Just remove bones and skin before baking.

You could also use any cut of chicken and leave them whole, with the rest of the ingredients mixed in.

Any color of bell peppers work. I like to use a green and a red (or yellow/orange) to balance out sweetness with crispness.

Red onion is also my go-to because it has a little extra sweetness and less sharp, spicy flavor, but any colored onion is fine.

A plated serving of Chicken Fajita Casserole

I love that this chicken casserole recipe is saucy!

I am a sauce lover, and that sauce can also be used to serve on top of rice or vegetables.

Serve it up with your favorite toppings like lime wedges, pico de gallo salsa, or cilantro.

Chicken Fajita Casserole in a white square dish

Spice it up!

This Chicken Fajita Casserole is what I would call a mild heat (unless you are using rather spicy chili powder!).

If you are a heat lover and want something more in the medium to hot range, you have a few options!

  1. Add more chili powder (1/2 to 1 Tablespoon)
  2. Add cayenne pepper
  3. Add hot sauce
  4. Add jalapeno peppers along with the bell peppers

All of these options can be added to the cheese mixture as desired based on your preference.

Just keep tasting the cheese mixture until it is where you want it!

Need to accomodate a crowd?

I always like to keep things in the mild range and then offer hot sauce and hot salsas for those that want to add it while keeping everyone happy!

Chicken Fajita Casserole in a dish

This Chicken Fajita Casserole cooks quickly in the oven in less than 30 minutes which makes it a great weeknight meal.

You could also turn this into a slow cooker crock pot recipe. Just add all of the ingredients into the slow cooker with the cheese on top and let it cook on low for 6-8 hours.

This is great for when you want to make something in advance with no fuss at meal time.

If needed, add a little water or stock to the casserole if it thickens too much.

A fork with the casserole on it above a plate

Chicken Recipes

Some of our most popular chicken recipes!

Pin image for a spoon scooping Chicken Fajita Casserole out of the dish with the title at bottom
The meal being scooped out of a white square dish

Chicken Fajita Casserole

This fast and easy Chicken Fajita Casserole uses the same great flavors of Mexican chicken fajitas in a one dish creamy meal!
5 from 5 votes
Print Pin Rate
Course: Main Course
Cuisine: Mexican
Keyword: 30 Min or Less, Chicken/Turkey, Gluten Free, Keto/Low Carb
Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
Servings: 4 servings
Calories: 910kcal

Equipment

Ingredients

Instructions

  • Preheat oven to 350F.
  • In a large mixing bowl, combine the cream cheese, sour cream, and mayonnaise. (If the sour cream is not softened, microwave in the bowl in 30 second increments until it is mainly mixable).
  • Add the chili powder, cumin, paprika, garlic powder, and salt into the cheese mixture. Season to taste as desired, including more heat from either chili powder, cayenne powder, or hot sauce.
  • Cut the chicken into 1 to 1.5 inch pieces and add to the bowl.
  • Cut the bell peppers and onions into strips (like you would for fajitas) and then bite sized pieces and add to the bowl.
  • Add 1 cup of your shredded cheese to the bowl.
  • Mix all of the ingredients together.
  • Spray an 8×8 (or larger) baking dish with nonstick spray.
  • Pour the chicken mixture into the dish and level out.
  • Top with the remaining 1/2 cup cheese (or more!).
  • Bake until the chicken is cooked through, approximately 20 minutes.
  • Serve with your favorite toppings like salsa, pico de gallo, avocado, etc.

Notes

You can use a larger baking dish, however note that the thinner layer will likely result in a quicker cooking time and you will need more cheese to cover the top of the casserole.
This casserole is pretty saucy, so it is great to be served on top of rice or vegetables. If you prefer a less soupy casserole, either add 1 Tablespoon thickener like flour or cornstarch, another cup of shredded cheese, or omit the sour cream and mayonnaise.

Nutrition

Serving: 1serving | Calories: 910kcal | Carbohydrates: 12g | Protein: 64g | Fat: 67g | Saturated Fat: 28g | Cholesterol: 279mg | Sodium: 1238mg | Potassium: 1233mg | Fiber: 3g | Sugar: 7g | Vitamin A: 4154IU | Vitamin C: 81mg | Calcium: 426mg | Iron: 3mg

By on January 4th, 2021

About Kim

Kim has grown up with a passion for cooking good food! You can find her in the kitchen experimenting with new recipes, making dog treats, and eating Italian food!

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7 thoughts on “Chicken Fajita Casserole”

  1. 5 stars
    This recipe is absolutely amazing! It is the perfect amount of creamy mixed with fajita flavor. My husband and son enjoy it wrapped up in a tortilla but I just eat it with a bowl and fork!

    Reply

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