Skip the Mexican restaurant and let your slow cooker make steak fajitas for you! These Crock Pot Steak Fajitas come together with a few simple steps and are served up with all the flavor of a restaurant dish!
Looking for more great fajita recipes? Check out Honey Lime Chicken Fajitas, Instant Pot Steak Fajitas, Chicken Fajita Pizza, and Chicken Quinoa Fajita Bowl.
Slow Cooker Steak Fajitas are the perfect lazy and cheap way to enjoy Steak Fajitas any night of the week.
This slow cooker steak recipe uses pantry staples, an inexpensive cut of meat, and takes just minutes to prepare.
Key Ingredients
- Steak–like flank steak or sirloin steak
- Bell Peppers–a variety of colors, all one color, or even frozen pepper and onion strips
- Onions
- Fajita Seasoning
- Tomatoes with Diced Green Chiles–AKA Rotel Tomatoes
- Cilantro–optional
- Fresh Lime Juice and Zest
What kind of beef do you use for fajitas?
Because this is a recipe for crockpot steak fajitas, a less expensive cut of meat works great. Choose one of the following cuts of meat to slice up for this fajita recipe.
- Sirloin Steak
- London Broil
- Flank Steak
- Round Steak
- Cane Picada—Carne picada is thinly sliced or shredded beef. It is typically chuck beef that a butcher has sliced thinly for you to be used in tacos, burritos or fajitas.
How to Make Crock-Pot Slow Cooker Fajitas
Step One: Cut Steak
- Using a sharp knife, thinly slice your chosen cut of steak, against the grain, into 1/2 inch strips.
- Pro-tip: Place your steak into freezer for 10-20 minutes–this makes it MUCH easier to slice.
Step Two: Prepare Peppers and Onions
- Cut fresh peppers and onions into 1/2 inch strips, or alternatively use a bag of frozen pepper and onion strips.
Step Three: Slow Cook Steak Fajitas
- Place the steak, peppers, and onions into the slow cooker.
- Add in taco 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.
Step Four: Serve Steak Fajitas
- It is best to serve the meat using a slotted spoon to drain off excess liquid produced by slow cooking your steak. This will retain all the peppers, onions, steak, and flavor but not leave you with a soggy tortilla.
- serve up the steak fajita mixture on flour tortillas with sour cream, cheese, and avocado.
What goes with steak fajitas?
Slow Cooker Steak Fajitas
An easy recipe for Slow Cooker Steak Fajitas that uses an inexpensive cut of meat, staple pantry ingredients and tastes down right delicious!
Print Pin RateServings: 6
Calories: 271kcal
Ingredients
- 1 pound flank or sirloin steak sliced against the grain into 1/2 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 can diced tomatoes with green chiles
- 1 bunch fresh cilantro chopped (optional)
- 2 limes juice and zest
For Serving
- tortillas, sour cream, Greek yogurt, shredded cheese, etc
Instructions
- Place the steak, peppers and onions in slow cooker. Season with fajita seasoning and toss to coat.
- Pour tomatoes over top of 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.
Notes
- Feel free to use a 16 ounce bag of frozen pepper and onion strips in place of fresh peppers and onions--no need to defrost!
Nutrition Facts
Slow Cooker Steak Fajitas
Amount Per Serving
Calories 271 Calories from Fat 54
% Daily Value*
Fat 6g9%
Saturated Fat 2g13%
Cholesterol 68mg23%
Sodium 421mg18%
Potassium 928mg27%
Carbohydrates 26g9%
Fiber 7g29%
Sugar 3g3%
Protein 29g58%
Vitamin A 6515IU130%
Vitamin C 33.1mg40%
Calcium 109mg11%
Iron 4.6mg26%
* Percent Daily Values are based on a 2000 calorie diet.
I would love to know how you enjoy this recipe!Snap a picture and tag #amindfullmom on Instagram or Facebook - I would love to see!
silly question, but can you use not frozen veggies as well???
I use frozen pepper and onion blend all the time–it works great 🙂
We love fajitas! This recipe is so easy, almost set and forget kind of meal), slow cooker is such a time saver!
It is almost TOO easy–which is perfect for busy nights.
These came out soooooo flavorful and were a big hit with the whole family!
I am so happy to hear that April! I love when a meal is a hit with the whole family.
Can I ask a silly question. I haven’t used this function yet and have read your other article on how to use medium or high (high plus 15m per hour), so I get that. But do I need to leave the lid of venting? So that the pressure doesn’t build up? Can I use my glass lid so I can see what is going on? Its probably a really stupid question but I’ve no idea. I love your site. Thank you so much for all of these articles and may God bless you!
Hi Nicole. You can use the glass lid OR you can use your regular Instant Pot Lid (just leave vent knob to venting, not sealed–although the instant pot should never get hot enough to seal anyways) Or you can make this recipe super quickly with my Instant Pot Steak Fajitas
I love busting out my slow cooker in the summer. This needs to happen asap!
Yes, it does!
I buy flank steaks for grilling but have never cooked the strips in a crock. These tacos look super delish.
They work great in crock pot too. Or so does a london broil and is cheaper!
We love flank steak, but I’ve never made it in the slow cooker, great idea, my son loves both steak and tacos, so I will have to try this soon!
I hope you do Joy!
These fajitas look so yummy! I’ve never cooked flank steak in the slow cooker, but you’ve totally inspired me to try. Love all the spices and fresh cilantro!
Thanks Lucy–hope you enjoy them!
Wow this looks so easy. I’m going to have to try it. I usually do chicken because I never knew what kind of beef to use. Flank steak huh? I’ve never tried those frozen pepper either but I’ve always wanted to. Great recipe!
Denise, flank steak (or london broil–even cheaper) and frozen pepper strips make this an easy and affordable meal
I don’t think I would be able to stay out of the slow cooker! These looks so good.
Totally acceptable to sneak a few 🙂
I’ve never tried making fajitas in the slow cooker before! Can’t wait to try this!
I hope you give these a try Jessica. We LOVE them in our family!
interesting! not something I would have thought to make in the slow cooker, sounds tasty.
Give it a try David–so good!
I have just started using my crock pot more and I’m loving all the delicious meals I can coax out of it with just a modicum of attention to cooking time and ingredient. I’m going to add these Slow Cooker Steak Fajitas to my meal plan to try.
I LOVE my slow cooker Ronda!