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    Crockpot Steak Fajitas

    Slow Cooker Recipes Beef Recipes Dairy-Free Recipes Gluten Free Kid Friendly March 25, 2023 | By Kristen Chidsey | 34 Comments | *This post may contain affiliate links. Read my disclosure policy.

    Jump to Recipe
    Crockpot Steak Fajitas is a dump-and-cook recipe that transforms an inexpensive cut of beef into a memorable, flavorful dinner recipe that is perfect for any night of the week.

    Crockpot Steak Fajitas is a dump-and-cook recipe that transforms an inexpensive cut of beef into a memorable, flavorful dinner recipe that is perfect for any night of the week.

    Looking for more fajita recipes? Try out my easy recipes for Vegetarian Fajitas, Instant Pot Steak Fajitas, and Honey Lime Chicken Fajitas.

    Steak Faijtas on a wooden cutting board with fresh limes next to it.


    This recipe for Slow Cooker Steak Fajitas has all the delicious flavors of traditional fajitas minus the hassle, the sizzling skillet, and the price tag.

    why use the slow cooker?

    When it comes to making fajitas, using the crockpot may seem like an odd choice, as fajitas typically are a fast-cooking skillet recipe. But there are several reasons this recipe works.

    • Less Expensive. By cooking low and slow, you can use a less expensive cut of beef to make crockpot steak fajitas, and the beef will still become perfectly tender.
    • Hands-Off. After slicing the beef, peppers, and onions, this slow cooker does the work for you.
    • No Smoking Skillet. If you have made steak fajitas on the stovetop or ordered steak fajitas out, you know that traditional steak fajitas produce a lot of smoke and a lingering smell. The slow cooker keeps that permeating smell of smoke out of your kitchen and clothes.

    Notes on Ingredients

    • Steak: Because this is a recipe for crockpot steak fajitas, a less expensive cut of meat works great. Choose a cut of beef like flank steak, round steak, or sirloin steak.
    • Onions and Peppers: Use any variety of bell peppers and onions you like. This is also a great time to take a shortcut and use a bag of frozen peppers and onions.
    • Homemade Fajita Seasoning: This is a simple blend of pantry staples, including chili powder, cumin, smoked paprika, salt, onion powder, and garlic powder.
    • Tomatoes with Diced Green Chiles: Be sure to use MILD if you don't want your crockpot fajitas to be too spicy.
    • Fresh Lime Juice and Zest: Don't overlook this! Adding the zest and juice of fresh lime will wake up the flavors.

    How to Make Slow Cooker Steak Fajitas

    • Using a sharp knife, thinly slice your chosen cut of steak, against the grain, into ½-inch strips. Pro-tip: Place your steak into the freezer for 10-20 minutes--this makes it MUCH easier to slice.
    • Cut fresh peppers and onions into ½-inch strips.
    • Place the steak, peppers, and onions into the slow cooker. 
    Peppers, Onions, and Steak in Slow Cooker
    • Add in the fajita seasoning and toss to coat. 
    • Pour tomatoes over top and spread to cover the meat.
    • Cook on low for 6 hours or on high for 3-4 hours.
    • Once cooking time is finished, mix in the zest and juice of the limes and fresh chopped cilantro, to add brightness to these fajitas. 
    spoonful of Steak Fajita mixture.

    Serving Suggestions

    • For Traditional Fajitas, use a slotted spoon to drain off excess liquid and then serve the mixture on Homemade Flour Tortillas, with sour cream, cheese, and/or sliced avocado.
    • Serve the mixture and cooking liquid over Instant Pot Quinoa, Instant Pot Cilantro Lime Rice, or Instant Pot Brown Rice.
    • Pair these steak fajitas with Instant Pot Refried Beans, Instant Pot Spanish Rice, and a side of Homemade Guacamole, for a delicious restaurant-quality dinner.
    Steak Fajitas on Cutting Board.

    Storage

    Once cooled, any leftover steak fajita mixture can be stored in an airtight container for up to 4 days. You can also opt to freeze the mixture for up to 1 month.

    More Easy Tex-Mex Recipes

    • Crockpot Salsa Chicken
    • Instant Pot Chicken Tacos
    • The Best Taco Meat
    • Easy Chicken Enchilada Casserole

    If you enjoyed these Crockpot Steak Fajitas, I would love for you to leave a comment and rating below. 

    Two assembled steak fajitas on wooden plate served with sliced avocado.

    Slow Cooker Steak Fajitas

    Crockpot Steak Fajitas is a dump-and-cook recipe that transforms an inexpensive cut of beef into a memorable, flavorful dinner recipe that is perfect for any night of the week.
    4.91 from 30 votes
    Print Pin Rate
    Course: Main Course
    Cuisine: Mexican
    Prep Time: 10 minutes minutes
    Cook Time: 4 hours hours
    Total Time: 4 hours hours 10 minutes minutes
    Servings: 6
    Calories: 271kcal
    Author: Kristen Chidsey

    Ingredients

    • 1 pound flank or sirloin steak sliced against the grain into ½-inch strips
    • 1 tablespoon fajita seasoning
    • 1 red bell pepper thinly sliced
    • 1 green bell pepper thinly sliced
    • 1 yellow bell pepper thinly sliced
    • 1 onion thinly sliced
    • 15 ounces diced tomatoes with green chiles (Rotel Tomatoes)
    • 1 bunch fresh cilantro chopped (optional)
    • 2 limes juice and zest

    For Serving

    • tortillas, sour cream, Greek yogurt, shredded cheese, etc
    Prevents your screen from going dark while preparing the recipe.

    Instructions

    • Place the sliced steak, peppers, and onions in a slow cooker. Season with fajita seasoning and toss to coat.
    • Pour the diced tomatoes over top of the mixture and spread out evenly.
    • Cook on low for 6 hours or on high for 3-4 hours.
    • Once cooking time is finished, mix in the zest and juice of the limes and cilantro if using.
    • Serve with a slotted spoon for fajitas or with the cooking liquid over rice or quinoa.

    Equipment Needed

    • 6-8 quart Slow Cooker

    Notes

    Peppers and Onions: Use any color of peppers or a variety of peppers as the recipe states. You can also opt to use a 16-ounce bag of frozen pepper and onion strips in place of fresh peppers and onions--no need to defrost!
    Leftovers: Once cooled, any leftover steak fajita mixture can be stored in an airtight container for up to 4 days. You can also opt to freeze the mixture for up to 1 month.
    For the Fajita Seasoning: use 1 teaspoon chili powder, ½ teaspoon cumin, ½ teaspoon smoked paprika (or regular paprika), ½ teaspoon salt, ¼ teaspoon onion powder, ¼ teaspoon garlic powder, and a dash of cayenne pepper.

    Nutrition

    Calories: 271kcal | Carbohydrates: 26g | Protein: 29g | Fat: 6g | Saturated Fat: 2g | Cholesterol: 68mg | Sodium: 421mg | Potassium: 928mg | Fiber: 7g | Sugar: 3g | Vitamin A: 6515IU | Vitamin C: 33.1mg | Calcium: 109mg | Iron: 4.6mg
    Liked this Recipe? Tag me Today!Snap a picture and tag #amindfullmom on Instagram - I would love to see!
    « Vegan Blueberry Pancakes
    Quick Meals for When You are Too Tired to Cook »

    About Kristen Chidsey

    Hi, I am Kristen, creator of A Mind "Full" Mom. I believe that making a wholesome family meal does not need to be hard or expensive! I love nothing more than to share with you delicious solutions for your hungry family.

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    1. PAM

      September 10, 2022 at 6:49 pm

      3 stars
      Well I thought this recipe
      was some what tasty it felt like it needed a little bit more spice and flavor
      Also it was super watery and when I went to roll it up in the tortilla everything just got soggy and gushed out the sides even though I did use a slotted spoon as recommended
      What can I do to make it less watery before I serve it?

      Reply
      • Kristen Chidsey

        September 11, 2022 at 8:28 am

        Hi Pam! Feel free to double the fajita seasoning or use spicy Rotel tomatoes. As for the liquid, you can drain the mixture over a strainer before serving if you find that using a slotted spoon did not prevent this issue.

        Reply
    2. Rose

      March 06, 2022 at 9:11 am

      5 stars
      Hello,
      I think today will be the 3rd time I'll be making these fajitas in my crockpot. My husband loves these cooked in the crockpot even more than those cooked in a frying pan. I also appreciate that I don't have to get up with the chickens due to the fact it only takes 6 hours on low for these fabulous tasting fajitas to be fully cooked.

      Reply
      • Kristen Chidsey

        March 07, 2022 at 6:40 am

        I am thrilled to hear you these fajitas are becoming a regular! I love how easy they are to make myself.

        Reply
    3. cassidy

      March 27, 2019 at 11:46 am

      silly question, but can you use not frozen veggies as well???

      Reply
      • Kristen Chidsey

        March 27, 2019 at 1:37 pm

        I use frozen pepper and onion blend all the time--it works great 🙂

        Reply
    4. Brandi

      November 17, 2018 at 12:35 am

      5 stars
      We love fajitas! This recipe is so easy, almost set and forget kind of meal), slow cooker is such a time saver!

      Reply
      • Kristen Chidsey

        November 17, 2018 at 7:47 am

        It is almost TOO easy--which is perfect for busy nights.

        Reply
      • Amy Pletcher

        September 03, 2022 at 11:06 pm

        Can you make this a freezer meal kit and put in the crockpot later? I have round steak in my freezer of course I don't want to refreeze the meat but it would be too hard to cut as is

        Reply
        • Kristen Chidsey

          September 04, 2022 at 7:21 am

          Hi Amy! In the future, you ABSOLUTELY can make a freezer meal with this. I would actually suggest using a bag of frozen peppers and onions and slicing the beef and then freezing with the seasonings and canned tomatoes. Frozen peppers and onions are often cheaper and already perfect for a frozen meal. Defrost overnight in the refrigerator and then cook as directed.

          Reply
    5. April

      November 16, 2018 at 10:32 pm

      5 stars
      These came out soooooo flavorful and were a big hit with the whole family!

      Reply
      • Kristen Chidsey

        November 17, 2018 at 7:47 am

        I am so happy to hear that April! I love when a meal is a hit with the whole family.

        Reply
        • Kate

          March 11, 2021 at 9:48 am

          I'm looking for a recipe where I don't have to add tomatoes. Would this still work without them?

          Reply
          • Kristen Chidsey

            March 11, 2021 at 10:56 am

            I would use 1/2 cup of beer or stock to cook the meat in to replace the tomatoes.

            Reply
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    Crockpot Steak Fajitas is a dump-and-cook recipe that transforms an inexpensive cut of beef into a memorable, flavorful dinner recipe that is perfect for any night of the week.

    Meet a Mind "Full" Mom

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    Hi! I'm Kristen. I want to welcome you into my kitchen and my REAL, imperfect life. Let me share with you tips and tricks to help you make healthy eating a reality for your family in the chaos of life and on the constraints of a budget. Read more

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