Slowcooker Steak Fajitas with Chili-Lime Cream

Okay I have the best recipe for you guys today, but I have to tell you about one more thing.  Those of you in our Membership Community, make sure to check the “bonus content” section this week.  Those of you who aren’t- this little bonus is totally worth signing up just for the month!  When we were thinking of you’d all want for Mother’s day, it wasn’t a recipe that YOU had to cook!  So we’ve made the best little menu that’s super amazing, but super easy.  We’ve put it all together with it’s own printable grocery list, instructions, and the cutest letter to your family.  Basically all you have to do is print it out and pass it off to a spouse or your kids and let them do the rest.  Boom!  You can sign up here to grab it!

Slowcooker Fajita Recipe

Okay, now today’s recipe.  I’ve said it before, but if I had to pick one meal to eat every day for the rest of my life, it would be fajitas.  Our classic Fajita recipe is still my FAVORITE, but I’ve been experimenting lately with some other methods so I can still get my fix even if I don’t have time to marinade meat and veggies, or if I don’t feel like turning on my grill.  I’ve got a sheet pan version coming up at some point as well, but first- slow cooker fajitas!  This is by far the quickest and easiest.  It’s a quick dump in the slow cooker with a super easy seasoning/sauce poured over and then a little set-it-and-forget-it action.  

Slowcooker Fajita Recipe

Flank steak isn’t a cut of meat you generally see cooked in a slow cooker.  It’s more often grilled or broiled.  Lately, however, I’ve discovered it’s the perfect cut for several recipes I’ve been working on.  I love how it keeps it’s sliced shape after it’s cooked (as opposed to turning into shredded beef) and the low and slow cooking method tenderizes it beautifully it a relatively short time (as in, short for a slow cooker, haha).  You’ll cut it into thin slices, like this.  The meat doesn’t really change size, so just cut the pieces how you’d like to have them when you’re all done.

Then you’ll need to chop up an onion, and a couple of large bell peppers, or 3 smaller ones like I’m doing here, 

Slowcooker Fajita Recipe It all gets tossed in your slow cooker with a quick and easy sauce. You don’t need to add any other liquid to the slow cooker; the vegetables will release tons of water. 

Slowcooker Fajita Recipe

If you keep a tally here, you’re going to need about 47 limes.  Okay just kidding, but a bunch.  This is one area where having my go-to powdered lime comes in handy.  It’s great to use in this first step, and then you can grab some fresh limes for the sour cream sauce, and squeezing over the finished dish.

True LimeOne note about cooking.  This will cook in 4-6 hours on high, or 7-8 on low.  That’s quite a while for tender veggies like peppers and onions.  I personally kind of like them totally soft- but you might find them too soft and bordering mushy.  If you like your veggies with a little more bite, just pop them in about half way through the cooking time.   While it cooks, you can whip up your sauce, which is sour cream, fresh lime juice and zest, chili powder, and a little zest.  I could eat this with a spoon. Also, our little mini heart whisk was pretty much made for tasks like this.  

Slowcooker Fajita Recipe

I like to toss the finished steak and vegetables with a squeeze of lime juice and a handful of chopped cilantro for an extra burst of flavor.  

Slowcooker Fajita Recipe

Serve them in the tortillas of your choice and drizzle the sauce over the top,  with any fixings you like!  I always love Pico de Gallo and avocado

Slowcooker Fajita Recipe

They don’t need a whole lot more.  The sauce adds so much freshness and flavor, that you can keep them simple!  Serve them on the tortillas of your choice- I’m loving these little “Street Taco” size tortillas (Mission brand makes them, sold by all the regular tortillas at the grocery store- they’re the ones that make you go “Ohhh my gosh look at these tiny tortillas, they’re so cute!”) which come in both flour and corn.  Besides being completely adorable, I’ve found they’re a great size for little hands.  They make the best tiny quesadillas for toddlers, too!  

Also, while I’m sharing things I love- I finally bought some taco holders and wondered why I hadn’t done that years ago.  It makes serving foods like this so easy.  Since my kids are younger, I like to assemble things like this before we even sit down at the table, and these are kind of fun to just set on each person’s plate so they stay all put together.  There’s lots of different styles on Amazon.  The one in my photo is this style, and I also have these little ones which are nice and compact, and my favorite for actually setting on plates for each person.

Anyway, enough chit-chat.  I hope this quick and easy meal helps you get dinner on the table at your house!  By the way, I have LOVED (cannot write that big and bold enough) all the heartfelt emails, messages, and comments from you guys about how much you are loving our meal plan service.  Like, they’re making me cry.  Our #1 goal was to help get families around the table and make your Mom job a little easier, and to hear we’re doing that just makes me melt.  Thank you thank you so much for letting us know how it’s going!  

Slowcooker Fajitas

Prep Time 15 min Total Time 15 mins

No fuss fajita recipe with tender steak strips and easy veggies, where everything is tossed in the slowcooker.


  • 2 pound flank steak
  • 2 large bell peppers, or 3 small/med (use red, yellow, or orange)
  • 1 large onion (red, white or yellow)
  • 1/4 cup fresh lime juice (about 3 large limes), plus extra for serving
  • 1 tablespoon soy sauce
  • 2 teaspoons liquid smoke
  • 1 tablespoon white vinegar
  • 1 tablespoon chili powder
  • 1 tablespoon cumin
  • 4-5 cloves minced garlic (pre-minced garlic works great!)
  • 2 teaspoons kosher salt
  • 1/2 teaspoon black pepper
  • Optional: extra lime and a handful of chopped cilantro
  • 1 cup sour cream
  • 2 tablespoons lime juice (zest a little lime in the sour cream before juicing!)
  • 1 teaspoon chili powder
  • kosher salt to taste


  1. Cut flank steak against the grain into about 1/2-inch slices. Then slice the opposite direction so you have 2-3-inch strips of meat. Place in slow cooker. Cut peppers and onions into large 1-inch strips and place on top of meat (see note below).
  2. In a small bowl, combine 1/4 cup lime juice, soy sauce, liquid smoke, vinegar, chili powder, cumin, garlic, salt, and pepper. Whisk to combine and then pour over meat and veggies and toss to coat. Place lid on cooker and cook 4-6 hours on high, or 7-8 hours on low.
  3. While meat is cooking, whisk together sauce ingredients and store in fridge till serving.
  4. When meat is done, optionally squeeze a little more lime on top and toss in a handful of chopped cilantro.
  5. Serve on tortillas of choice, with any additional toppings (ie: avocado, pico de gallo, etc.)


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  1. This sounds amazing! Have you given it a try in the Instant Pot yet? I would love to know if it would be just as great in a pressure cooker 🙂

    1. Nope 🙂 I meant to write something about that because I knew someone would ask, haha. I have a feeling that in order to cook the meat enough to tenderize it, it would obliterate the veggies, though!

        1. Haha, but I bet you could cook the meat and then pop the veggies in and put the lid on and they would steam super quick in the hot liquid after…

  2. I’m just imagining this between two slices of crusty bread with melted cheese and the chili lime sour cream spread on top! Kind of like a Mexican (ish) philly cheese!! Thanks for the recipe; can’t wait to try.

  3. I’m going to make the sauce with 0% fat, greek yogurt (Fage is my favorite) for a more macro-friendly version of sauce- no fat, more protein! Can’t wait to try recipe, looks so good and easy!

  4. I couldn’t bring myself to buy the flank steak because it’s so expensive, so I used chicken instead Cooked on high for 4 hours and I added the veggies for the last hour since I like them to still have some crunch. Delicious flavor and worked out great. Thanks for the recipe!

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