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Slow Cooker Steak Fajitas + VIDEO

Slow cooker steak fajitas is an simple recipe that only has 5 ingredients: beef, onions, bell peppers, tomatoes, and a homemade fajitas seasoning. Easy to make and aromatic while it cooks, this steak fajita recipe will become an instant favorite.  Instructions to make this easy fajita meal in the Instant Pot are also included.   

overhead shot or cooked steak fajitas in a black slow cooker

after (slow cooker)

Ingredients For Slow Cooker Steak Fajitas

  • Steak
  • Fajita Seasoning
  • Bell Peppers
  • Onions
  • Diced Tomatoes in juices

ingredients for slow cooker steak fajitas

What Are Fajitas

Fajitas are a classic Tex-Mex dish where meat is seasoned and grilled along with onions and bell peppers. Obviously this is not the traditional way of making fajitas since a slow cooker or Instant Pot is involved but the flavor is still there! 

 

How To Make Steak Fajitas In The Slow Cooker

Making steak fajitas in the slow cooker or Instant Pot is very easy. If you use the slow cooker, this fajitas recipe is a true set-it-and-forget-it recipe. 

Slow Cooker

  1. Add all ingredients to the slow cooker. Stir to mix well.
  2. Cook HIGH 2-3 hours, LOW 4-6.

Instant Pot 

  1. Turn on the pressure cooker and select sauté. Once hot add oil and beef to the pot. Cook 2-4 minutes or until beef is browned. Remove beef & set aside. Drain excess grease if needed. 
  2. Add onions & bell peppers. Cook 3-5 minutes or until vegetables are soft. Pour in broth or water and deglaze the bottom of the pressure cooker by scraping all the bits off with a wooden spoon.
  3. Add beef back to the pot along with diced tomatoes and fajita seasoning. Stir to mix well.
  4. Close lid and seal valve. Set high pressure for 9 minutes. When cooking time is complete, quick release the pressure. Stir & serve.
uncooked steak fajitas in the slow cooker

before (slow cooker)

What Type Of Beef To Use

I used a 2 pounds of flank steak that I sliced into strips. The beauty about the slow cooker or Instant Pot is that you can use your preferred cut of beef in this recipe. If not flank steak, other suggestions include sirloin, skirt steak, flat iron, chuck roast, rump, flank steak, beef stew meat, etc. You can substitute chicken or pork instead of beef if you like. Heck I have even made these fajitas using a large turkey breast. The concept stays the same, just swap out the protein.

There are only 5-Ingredients in this slow cooker or pressure cooker steak fajitas recipe.  This easy yet delicious whole30 and paleo dish is perfect any day of the week.

How To Serve Slow Cooker Fajitas

Traditionally fajitas are served in corn or flour tortillas. I believe you should serve these fajitas according to your dietary restrictions. My go-to is lettuce wraps. Other suggestions are tortillas or over rice (regular, brown, or riced cauliflower). You can also use this as filling for burritos or even enchiladas. Popular garnishes for fajitas include cheese, guacamole, lettuce, salsa, sour cream, etc. 

 

FAQs & Tips

  • In the recipe box you will find my go-to homemade fajita seasoning. It’s equivalent to 1 store-bought packet. 
  • Store leftover fajitas in an air-tight container in the refrigerator for up to 4 days.
  • The vegetables in this recipe are listed are 2 bell peppers and 1 large onion. I usually use 1 green bell pepper and 1 red one to be fancy. You can use 2 bell peppers of your choice. For the onions, I have used red onion, yellow onion, and white onion and I seriously don’t have a preference.
  • I used a 6-quart slow cooker / Instant Pot.

Mexican Inspire Recipes 

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overhead shot or cooked steak fajitas in a black slow cooker

Slow Cooker Steak Fajitas

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 1 review

Slow cooker steak fajitas is an simple recipe that only has 5 ingredients: beef, onions, bell peppers, tomatoes, and a homemade fajitas seasoning. Easy to make and aromatic while it cooks, this steak fajita recipe will become an instant favorite.  Instructions to make this easy fajita meal in the Instant Pot are also included.

  • Total Time: 3 hours 10 minutes
  • Yield: 6 servings 1x

Ingredients

Units Scale
  • 2 pounds beef, sliced into thin strips, seasoned with salt & pepper
  • 2 bell peppers, sliced
  • 1 large onion, sliced
  • 15 ounces diced tomatoes
  • 1/3 cup fajita seasonings (see below for homemade blend)
  • 1 tbsp oil (for Instant Pot only)
  • 1/4 cup beef broth or water (for Instant Pot only)

Homemade Fajita Seasoning

  • 2 tablespoons chili powder
  • 1 tablespoon cumin
  • 1 1/2 teaspoons salt
  • 1 teaspoon pepper
  • 1 teaspoon oregano
  • 1 teaspoon paprika
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder

Instructions

Slow Cooker

  1. Add all ingredients  to the slow cooker. Stir to mix well.
  2. Cook HIGH 2-3 hours, LOW 4-6.

Instant Pot 

  1. Turn on the pressure cooker and select sauté. Once hot add oil and beef to the pot. Cook 2-4 minutes or until beef is browned. Remove beef & set aside. Drain excess grease if needed.
  2. Add onions & bell peppers. Cook 3-5 minutes or until vegetables are soft. Pour in broth or water and deglaze the bottom of the pressure cooker by scraping all the bits off with a wooden spoon.
  3. Add beef back to the pot along with diced tomatoes and homemade fajita seasonings. Stir to mix well.
  4. Close lid and seal valve. Set high pressure for 9 minutes. When cooking time is complete, quick release the pressure. Stir & serve.
  • Author: Shannon Epstein
  • Prep Time: 10 mins
  • Cook Time: 3 hours

Nutrition

  • Serving Size:
  • Calories: 242
  • Sugar: 2.4 g
  • Sodium: 317.2 mg
  • Fat: 8.1 g
  • Saturated Fat: 3.2 g
  • Carbohydrates: 7.7 g
  • Fiber: 2 g
  • Protein: 33.8 g
  • Cholesterol: 90.7 mg

 

 

This post contains affiliate links. That means if you click on one of the product links, I might receive compensation. For more about my disclosure policy see here: https://fitslowcookerqueen.com/about/disclosure-policy/.

[adthrive-in-post-video-player video-id=”f9f4hvA5″ upload-date=”2019-11-06T18:34:35.000Z” name=”Instant Pot Steak Fajitas” description=”There are only 5 ingredients in this slow cooker or pressure cooker steak fajitas recipe. This easy yet delicious low-carb, paleo, and whole30 dish is perfect any day of the week.”]

Slow Cooker Steak Fajitas + VIDEOSlow Cooker Steak Fajitas + VIDEOSlow Cooker Steak Fajitas + VIDEOSlow Cooker Steak Fajitas + VIDEO
Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star

Kyle

Monday 24th of January 2022

If you are making it in a crock pot do you exclude the oil and beef broth?

Shannon Epstein

Monday 24th of January 2022

Correct!

Carol Eaton

Thursday 23rd of January 2020

This was so good and easy! Leftovers could be used so many different ways.

Azure

Friday 15th of November 2019

I have used this recipe many times, but I can no longer find the recipe for the fajita seasoning. Is there a link somewhere that I’m missing?

Debbie

Sunday 5th of April 2020

https://i2.wp.com/fitslowcookerqueen.com/wp-content/uploads/2016/02/fajita-seasoning.jpg?w=1295&ssl=1

Fit SlowCooker Queen

Friday 15th of November 2019

Thank you for letting me know it disappeared, it should be back now.

Michael Smith

Sunday 9th of June 2019

What is considered a serving size?

Dawn

Saturday 16th of March 2019

I was looking for ideas for the crockpot tonight and found your recipe on Pinterest :) I am definitely making these tonight and debating on which kitchen gadget to use (I have a bit too many lol.) Probably my Ninja since it slows cooks and more. The Ninja multi cooker I have has the stove top feature and then I can drop it down to slow cook.

Have you tried to saute before slow cooking? I do that with beef stew and I am wondering if searing it will be a good idea or if I should dump it all in and go. I would love to try it in the Instant Pot one day too, but I won't be home early enough for that tonight.

Stephanie

Saturday 4th of April 2020

I always saute my ingredients on the stove and then add to the IP.