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    Home » Casseroles » Keto Chicken Fajita Casserole

    Keto Chicken Fajita Casserole

    Published: Sep 18, 2020 by Wendy Polisi Modified: Sep 23, 2020 · 937 words. · About 5 minutes to read this article.

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    Jump to Recipe Print Recipe
    Photo of a cheesy casserole with the text keto chicken fajita casserole above.

    Fajitas are always a fun meal, and this Keto Chicken Fajita Casserole packs all the flavors with the ease of a casserole. Perfect for weeknights since you can do all the prep-work ahead of time. It is delicious on its own, but perhaps even more so when served with a dollop of sour cream and a few avocado slices.

    Photo of a white casserole dish with Keto Fajita Casserole being scooped from it with a wooden spoon.

    Fajitas make a regular appearance on my dinner table, and it is a flavor profile that never gets old.

    Traditional fajitas - like these Keto Steak Fajitas - are always delicious, but sometimes I want something that is easier to make ahead of time. And sometimes I am craving a cheesy casserole.

    This Keto Fajita Chicken Casserole is easily one of my top-5 favorite casserole recipes. The first time I tested the recipe I wasn't feeling well and went to bed before having any. When I woke up, I was shocked to find the entire thing gone.

    (I have two teen boys who are over 6 feet tall, so I am not sure why I was so shocked.)

    When I tested it again, I understood why it was so quick to disappear. Give it a try, and I think that you will too.

    Ingredients for Low Carb Chicken Fajita Casserole

    • Avocado Oil - Avocado oil is my go-to oil because it is keto-friendly AND safe at high heat. If you are going to cook in olive oil, I recommend lowering the heat to medium and increasing the length of time you are cooking to make sure the oil doesn’t go beyond its smoke point.
    • Lime Juice - I used fresh squeezed, but you can use bottled if you like.
    • Keto Taco Seasoning - I make my own. If you want to purchase taco seasoning, make sure you read the labels. Many contain sugar and other ingredients that you may wish to avoid.
    • Sea Salt - I used fine pink sea salt. As always, salt is such a matter of personal preference, so adjust the amount you use to your tastes.
    • Boneless Skinless Chicken - You can use breasts or thighs. I’ve made it with both, and it works well either way.
    • Bell Peppers - For presentation, I like a mixture of colors.
    • Onion - I used a large yellow onion, but whatever you have on hand is good.
    • Cream Cheese - Make sure you cube it before adding it to the casserole to make it easier to incorporate.
    • Cheddar Cheese - Monterey Jack or Pepper Jack are also great options.

    What Do You Serve With Keto Fajita Casserole?

    With meat and veggies, this delicious casserole is a meal by itself! It works fabulous with a side of Cilantro Lime Cauliflower Rice or Cabbage Rice. Sometimes I like to wrap leftovers up in a Keto Almond Flour Tortilla. For a simple side, a green salad is also lovely.

    Can This Recipe Be Made Ahead?

    Yes. This recipe can be made up to two days ahead of time and baked just before serving. Leftovers can be stored in a sealed container in the refrigerator for up to four days.

    Reheating

    This recipe can be reheated in the microwave, but I prefer the texture when it is reheated in the oven or in a skillet.

    How to Make Keto Chicken Fajita Casserole

    Photo collage of the step by step process to make Keto Fajita Casserole.

    First, start by marinating the chicken. Combine the oil, lime juice, taco seasoning, and salt in a bowl. Place the chicken in a shallow dish (or zip-top bag) and pour the marinade over. Marinate for up to 4 hours.

    Next, preheat the oven and spray your baking dish.

    Heat a skillet to medium-high and add the chicken. The oil that clings to the chicken from the marinade should be enough to prevent sticking, but you can add additional oil if you need to. Cook until the chicken is browned, and then remove from the skillet.

    Add the vegetables to the skillet and cook until tender.

    Reduce the heat and return the chicken to the skillet. Add the cream cheese and taco seasoning and stir until combined.

    Transfer to the baking dish and top with the shredded cheese. Bake for 30 minutes.

    Close up photo of Keto Fajita casserole on a spoon over the casserole dish.
    If you like this recipe don't forget to leave a 5 star rating and let me know how it went in the below comments, I love hearing from you! You can also FOLLOW ME on FACEBOOK, INSTAGRAM, and PINTEREST to see all my delicious recipes.
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    Close up square photo of Keto Fajita casserole on a spoon over the casserole dish.
    Print Recipe

    Keto Chicken Fajita Casserole

    We love fajitas at our house, and this is an easy way to enjoy all the flavors without the carbs. I like to serve this with crisp shredded romaine on top. It is also fabulous with my almond flour tortillas if you happen to have them on hand
    Prep Time10 mins
    Cook Time40 mins
    Total Time50 mins
    Course: Main Course
    Cuisine: American, Mexican
    Keyword: Casserole
    Servings: 8
    Calories: 386.39kcal
    Author: Wendy Polisi
    As an Amazon Associate I earn from qualified sales.

    Equipment

    • Large Skillet
    • 9 x 9 Casserole Dish

    Ingredients

    • ¼ cup avocado oil
    • 2 tablespoons lime juice
    • 3 tablespoon keto taco seasoning or fajita seasoning, divided
    • ½ teaspoon sea salt
    • 1 ½ pounds boneless skinless chicken cut into strips
    • 2 bell pepper seeded and sliced
    • 1 large onion sliced
    • 8 ounces cream cheese softened and cubed
    • 8 ounces shredded cheddar

    Instructions

    • Combine the avocado oil, lime juice, 2 tablespoons of taco seasoning, and salt in a small bowl. Place the chicken in a shallow dish or zip-top bag and pour the marinade over. Marinate for at least 30 minutes or up to 4 hours.
    • Preheat the oven to 350 degrees. Spray a 9 x 9 baking dish with cooking spray.
    • Heat a large skillet to medium-high heat. Add chicken and cook for 4 to 6 minutes, stirring halfway through until browned. Transfer to a bowl.
    • Add the vegetables, and cook until they are crisp-tender, about 5 minutes. (You can add additional oil if the pan is too dry.)
    • Add the chicken back to the skillet and reduce heat to medium-low. Add cream cheese and remaining 1 tablespoon of taco seasoning. Stir until melted.
    • Transfer to the prepared baking dish. Top with cheese and bake for 30 minutes.

    Nutrition

    Calories: 386.39kcal | Carbohydrates: 5.61g | Protein: 27.26g | Fat: 28.22g | Saturated Fat: 12.73g | Cholesterol: 115.38mg | Sodium: 613.72mg | Potassium: 464.43mg | Fiber: 1.09g | Sugar: 3.19g | Vitamin A: 1739.05IU | Vitamin C: 41.72mg | Calcium: 241.68mg | Iron: 0.86mg

    More Mexican Inspired Keto Recipes

    • Keto Steak Fajitas
    • Mexican Salsa
    • Keto Chicken Enchilada Casserole
    • Zucchini Enchiladas
    • Keto Queso
    • Chicken Taco Lettuce Wraps
    • Slow Cooker Chicken Tinga
    « Caprese Chicken - Keto, Low Carb
    Keto Philly Cheesesteak Casserole »
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    Welcome

    I'm Wendy and I'm here to show you just how delicious a low carb, gluten free and keto diet can be! You are just as likely to find me obsessing over all things cheesy as you are getting excited by a full produce drawer. I'm a mom to three, obsessive planner and roller coasters are my happy place. Let's dig deeper →

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