100 Days of Real Food

menu icon
go to homepage
  • About
    • Welcome
    • Original 100 Day Pledge
    • 100 Day Budget Pledge
    • FAQs
  • My Cookbooks
  • Resources
    • Our Shop
    • Meal Ideas & Resources
    • Mini-Pledge Progam
    • School Lunch Packing Chart
    • Favorite Amazon Buys
  • Blog
    • What Is Real Food?
    • How to Start
      • Real Food Tips
      • Eating Out and Travel
      • Food Shopping
      • How to Cook
      • Kitchen and Home
    • School Lunches
    • Snacks
    • Kids
      • Picky Eaters
      • Fun Stuff
  • Meal Plans
    • Real Food Meal Plans
    • School Lunch Plans
    • Free Weekly Dinner Plans
subscribe
search icon
Homepage link
  • About
    • Welcome
    • Original 100 Day Pledge
    • 100 Day Budget Pledge
    • FAQs
  • My Cookbooks
  • Resources
    • Our Shop
    • Meal Ideas & Resources
    • Mini-Pledge Progam
    • School Lunch Packing Chart
    • Favorite Amazon Buys
  • Blog
    • What Is Real Food?
    • How to Start
      • Real Food Tips
      • Eating Out and Travel
      • Food Shopping
      • How to Cook
      • Kitchen and Home
    • School Lunches
    • Snacks
    • Kids
      • Picky Eaters
      • Fun Stuff
  • Meal Plans
    • Real Food Meal Plans
    • School Lunch Plans
    • Free Weekly Dinner Plans
×
Home » Recipes

Crockpot Flank Steak Fajitas


Want to Save this Recipe?

Enter your email below & we'll send it straight to your inbox. Plus you'll get great new recipes from us every week!

Save Recipe

Slow cookers are great for entertaining because you can easily get all the work done in advance and have your house smelling amazing when guests arrive (we use this basic, inexpensive slow cooker). Who knew you could set-and-forget Mexican cuisine in the slow cooker so it's ready for dinner? See how this easy and delicious crockpot flank steak recipe comes together in our detailed recipe below. After all, slow cookers aren't just for soups, people!

Make Ahead Crockpot Flank Steak Fajitas

I just made these fajitas myself the other day and my daughters kept asking me “What smells so good??” They couldn’t wait to dig in and if you make the tortillas in advance it will just take some grated cheese, sour cream, and cilantro (plus any other fixings you like on your fajitas), and your feast will be ready in no time. You will love these Chicken Fajita Bowls too!

How Long to Cook Flank Steak in a Slow Cooker

If you cook the flank steak on high for roughly 5-6 hours, you'll end up with perfectly tender, pull-apart flank steak that takes on the spices and sauce flavors perfectly! Just note that different brands of slow cookers may have different heating temperatures despite having the same setting. To avoid drying out your flank steak, be sure to check on it around hour 4 and 5 if at all possible! (For reference, we used the 6Qt Crockpot on "High" for this recipe.)

Best Toppings for Steak Fajitas:

Your family's tastes may vary, but these are some of our favorite toppings to dress up these crockpot flank steak fajitas with!

  • Grated cheese, (try some Mexican Cotija!)
  • Fresh cilantro
  • Squeezed lime juice
  • Sour cream
  • Spinach
  • Sliced Avocado
  • Fresh Jalapenos (If you like more of a kick!)
  • Habanero peppers

I am getting hungry just talking about it. But don’t take my word for it…you must try it for yourself! Or, make these Chicken Fajitas or this Arrachera! For more ideas, try these Steak Recipes.

Slow Cooker Flank Steak Fajitas

Slow Cooker Flank Steak Fajitas

Based on the popularity of my other crock pot “real food” recipes I think you guys will love this one, too. These Slow Cooker Flank Steak Fajitas go great with homemade tortillas and your favorite toppings.
33 Reviews / 4.8 Average
Prep Time: 15 minutes mins
Cook Time: 5 hours hrs
Total Time: 5 hours hrs 15 minutes mins
Course: Dinner
Cuisine: Mexican
Method: Slow Cooker
Diet: Dairy Free, Egg Free, Peanut/Tree Nut-Free
Print Recipe
Servings: 6 people
Save Recipe Saved!

Ingredients
  

  • 1 ½ lbs flank steak (preferably grass fed (we buy ours from Baucom’s Best at the Matthews Farmers’ Market))
  • 1 ½ teaspoons chili powder
  • 1 teaspoon cumin
  • 1 teaspoon coriander
  • ½ teaspoon salt
  • ¼ teaspoon pepper
  • 2 tablespoons soy sauce (preferably the low-sodium variety)
  • 1 jalapeño (seeded and chopped)
  • 2 cloves garlic (minced)
  • 4 bell peppers (any color)
  • 1 onion

Other Fajita Fixings:

  • whole-wheat tortillas
  • cheese (grated)
  • avocado (sliced)
  • cilantro
  • lime
  • spinach
  • sour cream
  • hot peppers

Instructions
 

  • Mix together the dry spices with a fork including the chili powder, cumin, coriander, salt and pepper.
  • Rub the spice mixture over all sides of the flank steak and place it in the bottom of the slow cooker. Sprinkle the soy sauce on top.
  • Top the flank steak with the diced jalapeno and minced garlic. Slice the bell peppers and onion and throw those on top of the steak as well.
  • Turn the slow cooker onto HIGH and cook for 5 – 6 hours or until the steak can easily be shredded with two forks.
  • Drain the meat and peppers well then serve with the recommended fajita “fixings” (listed above).
    Enjoy!

Notes

We recommend organic ingredients when feasible.
Nutrition Facts
Nutrition Facts
Slow Cooker Flank Steak Fajitas
Amount Per Serving
Calories 196 Calories from Fat 54
% Daily Value*
Fat 6g9%
Saturated Fat 2g13%
Cholesterol 68mg23%
Sodium 602mg26%
Potassium 609mg17%
Carbohydrates 8g3%
Fiber 2g8%
Sugar 4g4%
Protein 26g52%
Vitamin A 2655IU53%
Vitamin C 105.8mg128%
Calcium 39mg4%
Iron 2.6mg14%
* Percent Daily Values are based on a 2000 calorie diet.
Want weekly REAL FOOD meal plans made for you?→ Check It Out

More Recipes

  • Garlic butter steak bites.
    Garlic Butter Steak Bites
  • Chicken sausage sheet pan.
    Chicken Sausage Sheet Pan
  • Sausage stir fry.
    Sausage Stir Fry
  • Sausage broccoli pasta.
    Sausage Broccoli Pasta
38.8K shares

About Lisa Leake

Lisa is a wife, mother, foodie, blogger, and #1 New York Times Best-selling author who is on a mission to cut out processed food.

Comments

  1. Jennifer says

    September 18, 2014 at 6:14 pm

    I made this meal today for my family but my meat turned out really tough. We had a hard time cutting through it with a knife! This has happened to me a couple different times with my slow cooker. I followed the recipe exactly. Do you know if tough meat means I am cooking my meat too long or not long enough? The meat and vegetables in this recipe produced alot of juice. Did the meat boil in the juice and therefore turn out tough? I really have no idea why my meat in several recipes have really not turned out well. I would love to use my slow cooker with confidence but so far all I have made with it are several very disappointing meals! I would appreciate any advice you can give me.

    Reply
    • Debbie says

      September 22, 2014 at 9:25 am

      Jennifer, I would try cooking on low instead of high. I rarely use my crock pot on high and have almost always had great results from any recipe. Low and slow is the key to tender meat in the crock pot

      Reply
  2. Leah says

    September 04, 2014 at 12:44 pm

    I made this yesterday for my fiancé because I wasn't going to be home. He works all day, so it cooked on low for 8 hours and he texted me specifically to tell me how good it was. For most people that's not really a big deal, but I rarely get more than an, "it's fine" when I ask him how he likes a meal. Going out of his way to tell me how good it was is high praise.

    Reply
  3. Corrinne says

    August 23, 2014 at 5:02 pm

    Hi! I see that you said to cook it on high for 5-6 hours, but will it do just as well on low for 9-10? I would like to prep it before I leave for work and have it ready when I return home at the end of the day. Thanks!

    Reply
    • Assistant to 100 Days (Amy) says

      August 25, 2014 at 10:14 pm

      Hi Corrinne. Some readers have cooked it on low for longer with success. I think it should work fine. ~Amy

      Reply
  4. Alison says

    August 19, 2014 at 11:35 am

    5 stars
    I made this last night and it was delicious. Next time I make it I was thinking of leaving the peppers out until the last hour so they remain a little crisper. Do you think there would enough liquid to cook the steak with out the peppers in the pot?

    Reply
    • Assistant to 100 Days (Amy) says

      August 20, 2014 at 1:55 pm

      Hi Allison. We've not tried. FYI: the peppers add a lot to the flavor of the steak, too. ~Amy

      Reply
  5. Jennifer says

    August 15, 2014 at 2:36 pm

    Tried this the other night and loved it! But the crazier thing was that my husband loved it! He normally "likes" my cooking to be nice. There was a definite difference in his tone and gestures this time!! Thanks for a great recipe!

    Reply
  6. Jennifer says

    August 13, 2014 at 3:51 pm

    Hi! It seems that my flank streak does not fit on the bottom of my crock pot. It's a bit big. I think it's a little over 1 1/2 pounds. Is that ok? Will it still cook safely? (I clearly don't use the crock pot much:))

    Reply
    • Assistant to 100 Days (Amy) says

      August 15, 2014 at 10:24 am

      Hi Jennifer . We are rarely able to answer recipe questions in real time. Did it turn out okay? As long as your crock pot lid fits on without a gap, you should be fine. ~Amy

      Reply
  7. Megan says

    August 10, 2014 at 2:28 pm

    In regards to tortillas. I found some that have the following ingredients: corn, water and lime (calcium hydroxide). A Google search explained that calcium hydroxide is just limes that are dehydrated then ground up... Are these tortillas ok to eat, given the calcium hydroxide in them? Thanks!

    Reply
    • Assistant to 100 Days (Amy) says

      August 22, 2014 at 5:15 pm

      Hi Megan. Yep, it is a typical ingredient in corn tortillas. Here is Lisa's recipe: https://www.100daysofrealfood.com/2011/04/26/recipe-easy-whole-grain-corn-tortillas/. The masa harina is also soaked in lime. ~Amy

      Reply
    • Kay says

      September 22, 2014 at 12:05 pm

      It's my understanding that calcium hydroxide is made from the mineral lime (not the fruit) and is added to corn in order to free up niacin and other nutrients. It's not harmful and should actually make the tortillas more nutritious. Here is some more information if you're interested: http://www.culturesforhealth.com/pickling-lime.html

      Reply
  8. Cindy says

    July 01, 2014 at 1:32 pm

    5 stars
    I came across this recipe by accident. I'm trying to find new and delicious recipes for my slow cooker. This one sounded very easy and yummy. Followed recipe exactly and I can tell you it was soooo good. Defiantly a keeper. I'm passing it on to my son. Thanks

    Reply
  9. Daniela says

    June 04, 2014 at 9:23 pm

    Hi! Do I have to top the slow cooker with water?? Everytime I use my slow cooker I use water, but the recipe doesn't say I need to.

    Thank you!

    Reply
    • Assistant to 100 Days (Amy) says

      June 06, 2014 at 9:04 am

      Hi there. Nope, you do not need to add water to this recipe. ~ Amy

      Reply
  10. Amy says

    June 02, 2014 at 12:13 pm

    Going to plan this for next week - how spicy is it? Trying to decide if I should leave the jalapeno out or not - my kids will handle a little, but not too much.

    Reply
  11. Alison says

    April 07, 2014 at 8:49 pm

    5 stars
    Made this for dinner last night without jalapeno and used the leftovers in a grilled cheese. Yummy!

    Reply
  12. Amber says

    March 15, 2014 at 11:30 am

    My flank steak is frozen...do I need to defrost first? Or can I place it in the crockpot frozen? Thanks!

    Reply
    • Assistant to 100 Days (Amy) says

      March 18, 2014 at 8:18 am

      Hello Amber. Always defrost your meat before cooking it in a crock pot. ~Amy

      Reply
  13. Franki says

    March 11, 2014 at 9:22 pm

    5 stars
    Yum! This was great! Easy!

    Reply
  14. Leah says

    March 11, 2014 at 9:08 pm

    5 stars
    This was a big hit! Used Bison steaks we had on hand and it turned out fabulous.

    Reply
  15. Julie says

    February 26, 2014 at 4:24 pm

    Is there something you can sub for the soy sauce? I'm pregnant and not supposed to have soy sauce.

    Reply
    • Assistant to 100 Days (Amy) says

      March 04, 2014 at 8:31 am

      Hi Julie. This might help: http://www.timescolonist.com/life/it-s-not-hard-to-make-a-substitute-for-soy-sauce-1.3009. ~Amy

      Reply
  16. Andrea says

    February 24, 2014 at 11:43 am

    Do you think you can freeze the remaining steak from the fajitas?

    Reply
    • Assistant to 100 Days (Amy) says

      February 24, 2014 at 8:03 pm

      Hello Andrea. Absolutely. :) ~Amy

      Reply
  17. Sheri says

    February 21, 2014 at 5:56 pm

    5 stars
    I just wanted to say thank you for this absolutely delicious and simple recipe!!! The whole family loved it! I used a 2 1/2 lb flank steak with the same number of peppers and onions and just increased the spices and it was perfect.

    Reply
  18. Monica Watkins says

    January 27, 2014 at 3:02 pm

    I want to double this recipe. Do you think it will turn out just as well by cooking in a large crockpot? I have a dinner party of 8 to make this for.

    Reply
    • Assistant to 100 Days (Amy) says

      January 30, 2014 at 2:02 pm

      Hi Monica. I do. You might need to increase cook time a bit. You will know it is ready when it can be easily shredded with two forks. ~Amy

      Reply
  19. Amanda says

    January 26, 2014 at 7:19 pm

    5 stars
    I made this with an organic, grass fed pot roast (couldn't find flank steak.) It turned out fantastic! The meat was so tender and flavorful!

    I used the leftovers to make Tortilla soup. I reserved the drained juices, added some corn, the leftover meat and veggie mixture, a little more broth, some salsa, and spices. We threw a little sour cream and crunched some organic tortilla chips on top. It turned out wonderfuly.

    I was able to get a dinner for 4 (fajitas,) lunch for 1 (fajitas,) dinner for 6 (soup,) dinner for 3 (soup) and 3 more lunches out of basically 1 meal!

    Reply
  20. brandie says

    January 20, 2014 at 6:49 am

    5 stars
    These were slap-your-mama good! I was looking for something to feed company after my daughter's gymnastics meet. I pre-made these that morning and stuck them in the crock pot at noon. We we came home for dinner, everything was cooked and ready. They tasted amazing!!!!

    Reply
  21. Robin says

    January 14, 2014 at 4:44 pm

    We are doing a serious 2014 budgeting plan and I'm making it a "real food" change too. These were amazing and will turn into Quesadillas later this week. Thanks for doing all the dirty work learning for us. As a full time working mom I didn't know where to start. These recipes are a life saver.

    Reply
  22. Erin says

    January 01, 2014 at 7:35 pm

    Thank you for the ideas and recipe! Celebrated the new year with some steak fajitas with all the trimmings, which I've never done before. Turned out great and couldn't be happier. Great blog overall, thanks!

    Reply
  23. Jamie Dunson says

    December 11, 2013 at 9:00 am

    Very good!!!!

    Reply
  24. Shannon says

    December 06, 2013 at 4:32 pm

    5 stars
    This is so good!! Even my picky eater devoured 2 fajitas. And being a super-easy crock pot recipe makes it even better. This just became a family favorite! Thank you!!

    Reply
  25. AMoyers says

    November 25, 2013 at 9:12 pm

    Delicious! My husband was skeptical, since we grill fajitas frequently, but I wanted to try a slow cooker meal that produced fajitas for tacos when the weather wasn't good for grilling. Followed the recipe exactly, and they were great. Thanks!

    Reply
  26. Cassandra says

    November 18, 2013 at 11:19 am

    5 stars
    I made this-used top sirloin instead because flank steak at my store wasn't grass fed. It was awesome! I am not that into peppers, but slow-cooking them added just the right heat and amount of flavor. I am using the leftovers for nachos. Since organic or grass fed meat is so expensive, when I do use it, I get more bang for my buck by making two meals instead of one!

    Reply
  27. Melanie says

    October 30, 2013 at 10:19 pm

    I made this for the first time today! I loved it! I made it exactly as stated. =)

    Reply
  28. Joan Dahlen says

    October 30, 2013 at 11:01 am

    Hi,
    I am making this as I type, but I could not bring myself to place such a tough cut of meat on "high" in the crock pot, so mine is set on "low" for 7 hours. However, I will be checking it to see it it is done before the 7 hours are up. I will let you know if a lower temp is a better idea. I think her grass fed beef is probably juicier and more tender than my supermarket flank steak, so I think cooking it on low may give me the same result as the original recipe. I will let you know!!

    Reply
    • Hilary says

      January 15, 2014 at 9:31 pm

      Hi Joan,

      I am thinking the same...how did yours turn out?

      Reply
  29. Erin says

    September 12, 2013 at 7:32 pm

    5 stars
    Have enjoyed this meal several times. Am glad for the addition to our monthly menu. I couldn't believe I could make something so yummy :)

    Reply
  30. Stella says

    August 18, 2013 at 6:14 pm

    Made this today. So easy and so delicious!

    Reply
  31. Assistant to 100 Days (Amy) says

    August 10, 2013 at 3:28 pm

    Hi Lana. This will help explain: https://www.100daysofrealfood.com/2010/05/10/you-are-what-you-eat-eats-too/. ~Amy

    Reply
  32. Lana says

    August 09, 2013 at 12:58 am

    Love this recipe and I can not wait to make it. Especially during the school year when things get hectic it is nice to have something already cooking in the crock pot. However, I am wondering why grass fed beef is so important and why you avoid grain fed beef?
    Thank you!

    Reply
  33. Margaret Grote says

    August 08, 2013 at 7:01 pm

    Would round steak work for this by chance?

    Reply
    • Assistant to 100 Days (Amy) says

      August 16, 2013 at 8:33 pm

      Hi Margaret. You should try and let us know how it goes. :) ~Amy

      Reply
  34. Ashley says

    August 08, 2013 at 5:51 pm

    My comment is above but email address is wrong on it so I wanted to make another one so it would
    Notify me via email when you responded :) thx

    Reply
  35. Ashley says

    August 08, 2013 at 5:49 pm

    Hi! Do you think this would work with chicken in the crockpot? Either a whole chicken or boneless, skinless chicken breasts? Thanks!

    Reply
    • Assistant to 100 Days (Amy) says

      August 10, 2013 at 2:51 pm

      Hi Ashley. Here you go: https://www.100daysofrealfood.com/2011/02/25/recipe-the-best-whole-chicken-in-a-crock-pot/. ~Amy

      Reply
  36. Holly says

    July 26, 2013 at 7:53 pm

    Just made this recipe for my husband with a steak from the local farmers market.... Delicious!! And that is coming from someone who rarely likes meat. Definitely a keeper.

    Reply
  37. lynne says

    May 29, 2013 at 5:45 pm

    Tried these today and they were yum!! Except i didn't see the bit about draining the mix well, and ended up with it swimming in the juices!

    Reply
  38. Assistant to 100 Days (Amy) says

    May 21, 2013 at 10:42 am

    Hi Maria. We have not. Some readers have cooked on low for 7-8 hours. ~Amy

    Reply
  39. Maria says

    May 15, 2013 at 12:39 pm

    Have you tried doing this recipe and/or the one for whole-chicken with the crockpot on LOW instead of HIGH? How many hours?

    Reply
  40. Michele says

    May 02, 2013 at 8:38 am

    4 stars
    Loved the idea of this recipe and what a great rub
    BUT..
    My husband too does not like peppers and I wanted to cook it overnight.
    Caution!!
    So I combined the suggestions of eliminating the peppers and cook on low for 7-8 hour.
    I am so dissapointed as my meat must have been so lean and without the moisture of the peppers, it burnt to a crisp (on the outside...I was able to save enought meat inside for 1 meal). AND my slow cooker cracked!

    With such a meat, it looks like you need the moisture from the veggies (even if you use the cooked peppers for something else) and maybe even a little moisture at th3 bottom of the pot (maybe a stock).

    I will be getting a new crock pot this week (a must in a busy house) and look forward to trying this recipe again :)

    Reply
« Older Comments
Newer Comments »

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recipe Rating




Welcome!


Meet Lisa! Lisa is a best-selling cookbook author, wife, mother, and passionate home cook. Lisa began blogging in 2010 and has created a community of millions of people who share her love of healthy living, real food ingredients, and family recipes.

Learn More

Popular

  • Chicken sausage pasta.
    Chicken Sausage Pasta
  • Steak with veggies.
    Steak with Veggies
  • Sausage and potatoes.
    Sausage and Potatoes
  • Spaghetti squash with meat sauce.
    Spaghetti Squash with Meat Sauce

Seasonal

  • Spaghetti squash boats.
    Spaghetti Squash Boats
  • How to cook spaghetti squash.
    How to Cook Spaghetti Squash
  • Air fryer popcorn chicken.
    Air Fryer Popcorn Chicken
  • Healthy blueberry pancakes.
    Healthy Blueberry Pancakes

Footer

↑ back to top

Browse

  • Cookbooks
  • Meal Plans
  • Recipes
  • Favorite Products
  • Free Downloads

Newsletter

  • Sign Up! for emails and updates

Blog

  • About
  • Comment Policy
  • Terms of Use
  • Privacy Policy
  • Partner With Us
  • Contact

As an Amazon Associate I earn from qualifying purchases.

Copyright © 2025 100 Days of Real Food