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Keto Steak Fajitas


These keto steak fajitas are the perfect way to enjoy all the flavors of this classic Mexican dish without all the extra carbs. It’s an easy one-pan keto dinner that is flavorful with little effort!

Whether you’re looking for a quick weekday meal or a weekend dish that everyone will be excited about, this keto-friendly steak fajitas recipe is one you’ll want toad to your keto meal planning rotation!

Serve these low-carb steak fajitas with our keto tortillas, cilantro lime cauliflower rice, or even a bed of lettuce. And if you want to take it up a notch, be sure you drizzle our keto spicy cilantro garlic sauce on your keto fajitas!

The meal cooks up in one pan in under 30 minutes. It’s a breeze to make with just a few basic ingredients.  And of course, this recipe wouldn’t be the same without our homemade fajita seasoning mix loaded with Mexican spices and has zero sweeteners, fillers, and additives.

Don’t forget to visit our keto fajitas recipes for more delicious options!



Keto Steak Fajitas

Keto Steak Fajitas Pin

Keto Steak Fajitas Pin

If you’re a regular reader here then you know that our family really loves the flavor profile of Mexican cuisine, so of course, when keto steak fajitas are being served, there aren’t any leftovers. 

The juicy slices of marinated steak, multicolored bell peppers, and onions seasoned with bold fajita flavors make a mouth-watering meal any day of the week. It’s so quick and easy that it can be a weekday staple but so delicious that it’s also perfect for special occasions!

With just a little bit of prep work, you can have restaurant-style Mexican food right at home minus the carbs but with all the flavor!

keto steak fajitas in cast iron skillet close up

keto steak fajitas in cast iron skillet close up

Are Steak Fajitas Keto-Friendly?

Steak fajitas can definitely be keto-friendly if you season them with homemade fajita seasoning, and serve them with keto tortillas, cauliflower rice, or wrapped in lettuce or even a bed of greens as a salad.

The key to keeping the carbs low is not serving them with traditional tortillas but with low-carb options. You should also opt out of the refried beans as they have too many carbs.

Keto fajitas can be a delicious keto option even when dining out, just request to leave out the high carb sides, and you’ll be a happy camper.

We like to also ask for extra guacamole for more of the good fat that keeps us satiated longer! Do keep in mind that there will likely be some hidden carbs in the fajita seasoning when ordering from a restaurant. 

How To Make Low Carb Steak Fajitas

keto fajitas in skillets on counter with various sides surrounding

keto fajitas in skillets on the counter with various toppings 

Disclosure: Some of the links below are affiliate links, meaning at no additional cost to you, I will earn a commission if you click through and make a purchase.

Once your steak is sliced and generously tossed with our keto-friendly fajitas seasoning and lime juice for rich Mexican flavors, you can even let it marinate for up to 4 hours if you are looking for a way to save time. 

However, the low-carb fajita seasoning is so rich in flavor that you could also just season it right before cooking. Either way, the keto fajitas will be bursting with flavor.

Cook the strips of steak over medium-high heat in a large skillet that is lightly coated with your choice of oil, I used avocado oil. Cook for just a few minutes on each side, making sure to get a nice sear on the steaks!

I like to then saute the combination of sliced red, orange, yellow, and green bell peppers and onions in the skillet where the steaks were cooked. Once again, making sure to get a nice sear on the peppers and onions!

The peppers become slightly charred around the edges and the onions caramelize in the steak’s juices. Then serve with your choice of low-carb tortillas, lettuce wraps, or a bed of greens, and of course all of the fixings! Guacamole, sour cream, cheese, pico de gallo, or keto salsa are all the classics.

Keto Steak Fajita Ingredients

keto ribeye steak fajitas being seasoned (

Keto ribeye steak fajitas being seasoned

With just a few basic ingredients, you can have a delicious keto meal on the table in under 30 minutes with this one-pan dinner.  The following are the ingredients you’ll need. Note that the full printable recipe card is at the bottom of the page.

  • Your preferred cut of steak, cut into small thin strips. I used Ribeye 
  • Peppers, I used a combination of green, red, yellow, and orange bell peppers.
  • Onion, sliced
  • Garlic cloves, minced
  • Oil, I used avocado oil
  • Keto-friendly fajita seasoning

Best Cuts of Steak For Keto Fajitas

If you’re wondering what type of cuts of steak to use for fajitas I’ve got you covered!

The most popular cuts of steak for fajitas are flank and skirt. Both are great choices and are easily sliced into strips and true to the classic dish. 

This doesn’t mean that you can’t use other cuts of steak, in fact, my favorite is to use is ribeye! 

The ribeye is perfect for keto fajitas because it’s a fatty cut that is perfect for a ketogenic diet! The fat is where all the flavor is too! 

If you don’t like a lot of fat on your meat then the flank steak would be the best choice for you. Sirloin tips are also a great option for fajitas!

Often you’ll find at the grocery store certain cuts already labeled as fajita steak which is helpful to identify which to buy.

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So when the Holy Spirit led us to combine our Christian faith and the keto diet, we did so in hopes of finding lasting transformation.

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keto steak fajitas in cast iron skillet close up

Keto Steak Fajitas

Yield: 6
Prep Time: 5 minutes
Cook Time: 15 minutes
Total Time: 20 minutes

These keto steak fajitas are the perfect way to enjoy all the flavors of this classic Mexican dish without all the extra carbs.


  • 1 1/2 lbs ribeye steak, sliced thinly
  • 1/2 medium red bell pepper, sliced
  • 1/2 medium green bell pepper, sliced
  • 1/2  medium yellow or orange bell pepper, sliced
  • 1 medium yellow onion sliced
  • 2 minced garlic cloves
  • 2 tablespoons of avocado oil

Keto Fajita Seasoning


  1. Toss the sliced steak with 2-3 tablespoons of keto-friendly homemade fajita seasoning.
  2. Add the lime juice and allow the steak to marinate while the peppers and onions are sliced.
  3. Heat a large skillet over medium-high heat with 2 tablespoons of oil.
  4. Add the steak strips and cook until the steak is seared well on both sides and is your desired temperature.
  5. Remove the cooked steak and add the peppers and onion, and minced garlic, and cook until tender about 7-8 minutes.
  6. Add the steak back into the skillet with the peppers to heat for a couple of minutes and serve immediately.
  7. Store leftovers in the refrigerator for up to 3 days.


I used a combination of bell peppers but you can opt to use just one and still have a delicious dish.

You can opt to swap the yellow onion for red onion if you prefer.

Nutrition Information:
Yield: 6 Serving Size: 1
Amount Per Serving: Calories: 335Total Fat: 20.1gSaturated Fat: 9.1gCholesterol: 90mgSodium: 300mgCarbohydrates: 2.9gNet Carbohydrates: 2gFiber: .9gSugar: 1.8gProtein: 20.6g

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