The perfect recipe to come home to! These slow cooker beef fajitas are delicious no matter how you serve them. Made with homemade, healthy fajita seasoning and simmered all day in a savory blend, these steak fajitas are a recipe you’ll want to keep on hand!

If you’re looking for busy weeknight meals, there is no easier tool than the slow cooker.
Call me old-fashioned but it is one of my favorites!
Coming home from work to a house that smells divine with a meal hot and ready is pretty much perfection for a busy mom.
And these slow cooker beef fajitas are no exception!
Learn more about slow cookers and how to choose the best one for your family (and how to use it!) and get on top of these clean eating slow cooker recipes to keep your nights sane.
As a Certified Nutrition Coach, I love that these steak fajitas are:
- Easy to make for busy days
- Dairy-free, gluten-free, and paleo
- Made with a homemade spice blend
- Versatile (learn more later in the blog post)
Ingredients You’ll Need
Steak strips: to be honest, any beef will work here. Most commonly, I use stir fry beef strips because they’re on sale (hello, budget meals!). However, I have also used flank steak and cut it up. Because the beef stews for so long, even a tougher cut will work! Learn more about buying meat on a budget so you can save costs here.
Bell peppers: choose any colors you like, these do get super soft from cookies so sometimes it’s nice to serve the slow cooker steak fajitas with some fresh on the side too.
Shredded carrot: I’m always looking to sneak more veggies into our meals so it’s a no-brainer to add in carrots here (learn more about how to sneak veggies into your kids’ diet).
Sweet onion: this is optional but definitely gives a flavor boost. However, if your kids are like mine and pick out any possible scrap of an onion, you may want to omit it.
Broth: you do need a tiny bit of broth for the recipe to fully get it’s flavor. Though beef broth makes sense, I actually use bone broth powder because it’s what I have on hand most often (learn more about bone broth powder).
Tomato sauce: grab a can of whatever you have in the pantry. FYI if you love the beef and tomato flavor you'll also love this Sabana De Res, a wicked Columbian dish!
Homemade fajita seasoning: a unique blend of spices you already have on hand that’ll bump up the flavor of the slow cooker beef fajitas.
If you want to switch it up, crockpot green chili chicken is another way to rock taco/fajita night too!

How To Make Slow Cooker Beef Fajitas
- Prep all your veggies.
- Place the steak and veggies into the slow cooker.
- Pour the broth and tomato sauce over the top.
- Mix the homemade taco seasoning and sprinkle it on.
- Mix all the ingredients and turn to low for 8 hours.
Step By Step Photos



Important Teaching Tips
Know that almost any cut of beef will work. Most commonly I use beef stir fry strips but flank steak cut into strips works too.
There’s no need to “lock” your lid on the crock pot, it’s okay if some of the steam and moisture escape.
This beef fajita recipe was made in a 7-quart slow cooker. If you have a larger slow cooker you many not need to cook them as long. On the opposite side a smaller crock pot you may need to cook them longer.
Basically, know that the size of your crock pot can alter the cooking length of the steak fajitas.
Use any broth you wish in the recipe, I use bone broth powder because it’s easiest and gives a bit of a healthy boost. Learn more about what bone broth powder is.
How To Serve The Beef Fajitas
This is the fun part of the meal!
Most commonly, we like to serve our beef fajitas or something like slow cooker pork carnitas on the table with the following toppings:
- Gluten-free warm tortillas
- Cashew sour cream
- Lime
- Kimchi
- Fresh crunchy peppers
- Diced tomatoes
- Salsa
- Avocados
We pop everything onto the table and let everyone fix their own fajita.

Cook Once Eat Twice
As I mentioned, one of the best things about these crock pot steak fajitas is that they can be used in multiple ways!
Obviously serving them with wraps is the most common, but the mixture itself can also be used:
- On top or mixed into rice to make stir fry
- Mixed with noodles for pasta
- On top of spaghetti squash for a lower-carb option
Personally, I like to double the batch sometimes so that we have leftovers for the next meal as well.
It’s how I make meal prep easy (learn more about tips to simplify meal prep).
Frequently Asked Questions About Slow Cooker Beef Fajitas
Skirt steak or flank steak tends to be used the most. However, almost any cut will work because the beef is cooked so long in the crock pot. With it simmering in juices all day the meat tends to soften a bit.
Any toppings you enjoy! The most common toppings for beef fajitas are salsa, sour crème, lime juice, chopped tomatoes, avocados, and fresh romaine lettuce.
Homemade fajita seasoning is a unique blend of chili powder, cumin, paprika, salt, pepper, and garlic powder.

Other Slow Cooker Recipes You’ll Love
- Slow cooker egg casserole
- Slow cooker beef and broccoli
- Slow cooker banana bread
- Slow cooker Tuscan chicken
- Slow cooker BBQ chicken thighs
- Slow cooker chicken teriyaki
- Slow cooker chicken pot pie
- Slow cooker chicken alfredo
Other Dairy & Gluten-Free Dinner Ideas For You
- One pot sausage pasta
- Sheet pan steak fajitas
- One pot chicken alfedo
- Chicken pesto pasta
- 30 dinner recipes for busy moms
- 33 Gluten and dairy-free dinners

Slow Cooker Beef Fajitas
Video
Equipment
Ingredients
- 1.2 kg Stir fry beef
- 2 Bell peppers sliced
- 1 Carrot jullienned
- ½ Sweet onion optional
- 200 mL Tomato sauce
- ¼ cup Broth
- 1 tbs Chili powder
- 1.5 tbs Cumin
- ½ teaspoon Paprika
- 1 teaspoon Salt
- 2 teaspoon Garlic powder
Instructions
- Slice the bell peppers and julienne the carrot.
- Place the steak and veggies into the slow cooker.
- Pour the broth and tomato sauce over top.
- Mix the homemade fajita seasoning and sprinkle it on.
- Mix all the ingredients together and turn to low for 8 hours.
Notes
Disclaimer:
Nutrition values are estimates only, using online calculators. Please verify using your own data"
Nutrition

Lindsey
These fajitas are a life saver! I throw this together in the morning before work and then, voila!, dinner is done when I get home! Your recipe is flavorful and I love the addition of the bone broth for flavor and health!
fitasamamabear
Honestly they save my sanity too, glad you liked them!
Gina
This was the perfect set it and forget it recipe for a busy day. Served it with tortillas or with salad greens and it was delicious either way.
fitasamamabear
It's a savior on busy nights for sure!
Kris
This was the perfect dinner to come home to! It was absolutely packed with flavor. Can't wait to make again!
fitasamamabear
Happy you all enjoyed it!
Jere Cassidy
What a winner. First of all, I agree with you that coming home and the house smelling like something delicious is cooking is so inviting. The family devoured the fajitas, and I totally loved how easy this meal was to make.
fitasamamabear
Haha it's the best feeling ever to come home to something ready!! Glad everyone loved it.
Addison
These beef fajitas are so flavorful and great for dinner. My family really enjoyed this recipe.
fitasamamabear
Wahoo!
Conchetta
My family loves this, and the fajitas are so easy to put together! New favorite
fitasamamabear
Amazing to hear! Simple is key.
Sarah
These were great, and so easy! I used flank steak and definitely kept the sweet onions in there. What a delicious and easy meal for a busy weeknight! Thank you for sharing!
fitasamamabear
Definitely keep things easy!
Jane
I made this for dinner last night and my whole family loved it! It's so easy to make and the flavors are delicious. I'm definitely making it again.
fitasamamabear
Glad to hear it!
Allie
These fajitas turned out sooooo good for my Mexican themed night. The beef was tender and not overcooked. Thanks for the recipe!!
fitasamamabear
Happy you enjoyed it!
Genevieve
I hadn’t made fajitas in the slow cooker before and I have to say this is a game changer! They were so delicious, tender, and I didn’t have to stand over a smoky stove. I will be bookmarking this one for sure!
fitasamamabear
It's SO much easier right?!
Shar
This slow cooker beef fajitas is irresistibly good and delicious! We can savor its flavors in every bite! So impressive!
fitasamamabear
Love that you enjoyed it!