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Home » Keto Recipes » Easy, Keto Low-Carb Paleo Steak Fajitas with Marinade

Easy, Keto Low-Carb Paleo Steak Fajitas with Marinade

Easy, Keto Low-Carb Paleo Steak Fajitas with Marinade is a quick healthy recipe that uses flank, sirloin, or skirt steak to grill juicy carne asada beef fajitas. This recipe includes instructions to prepare homemade seasoning and a marinade that will make your mouth water. Serve the steak and veggies on lettuce wraps or as a bowl.

keto low carb steak fajitas on a lettuce wrap

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This post was originally posted in 2017. It has since been updated.

FOR THE FULL LIST OF INGREDIENTS AND COMPREHENSIVE INSTRUCTIONS, PLEASE SEE THE RECIPE CARD AT THE END OF THIS POST. BEFORE YOU SCROLL, THERE’S IMPORTANT INFORMATION IN THIS BLOG POST.

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It’s not a secret among my friends and family that my steak marinade is the absolute truth. I love to whip up juicy, mouth-watering steaks. My preferred method is grilled. I find it easier to obtain medium doneness that way. 

The grill also offers so much flavor. I grill pretty much any time of the year. I’m not afraid to put on my coat and snow boots during the winter for the sake of a great meal. If you don’t have a grill, stove top or the oven will work just fine. 

raw steak in a bowl with fajita seasoning and marinade

How to Make Fajitas on Keto Diet

Nice low-carb fajitas are very easy to make. You will need fresh chopped onions and peppers along with steak, preferably skirt or sirloin. Then you will make homemade fajita seasoning using chili powder, unsweetened cocoa powder, cumin, steak seasoning, garlic powder, salt, and pepper. All of these ingredients are naturally low in carbs and perfect for the keto diet and lifestyle.

chopped fajita vegetables on a cutting board
raw steak in a bowl with homemade fajita seasoning

How to Make Steak Fajitas Marinade

I use low-sodium soy sauce as the liquid base for the marinade. Combine it with the steak and chili powder, unsweetened cocoa powder, cumin, steak seasoning, garlic powder, salt, and pepper. Marinate the meat in the fridge, preferably overnight for at least 2 hours.

raw steak in a bowl with homemade fajita seasoning and marinade

How to Make Good Steak Lettuce Wraps

  1. I prefer to grill the marinated steak, carne asada style. Once the steak has finished marinating, place a grill on medium-high heat. Allow the grill to heat for 4-5 minutes.
  2. Add the steak and grill until preferred doneness. Use a meat thermometer and test the interior of the meat to determine when it has finished cooking. The USDA minimum is 145 degrees. Here is a listing of the barometer: rare: 120-130 degrees, medium rare: 130-135 degrees, medium, 135-145 degrees, medium well 145-155 degrees, and well done 155 degrees.
  3. Season the veggies with garlic powder and place the vegetables in a grill basket and grill for 7-10 minutes until the veggies are soft and slightly charred.
  4. Remove the steak and veggies from the grill. Allow the meat to rest for 10-15 minutes prior to serving.
  5. Serve the fajitas over crunchy lettuce wraps. Romaine and butter lettuce work the best.

You can read more about the science and temperatures of cooking here.

colllage photo of sliced fajita vegetables in a grill basket and sliced steak cooking on a grill
keto low carb steak fajitas on a lettuce wrap

How Many Carbs are in Keto Steak Fajitas?

These steak fajitas have 4 net carbs.

keto low carb steak fajitas on a lettuce wrap
keto low carb steak fajitas on a lettuce wrap

Do I Have to Grill the Steak?

No, you can also pan sear the steak using the same temperature direction noted above.

keto low carb steak fajitas on a lettuce wrap
person holding keto low carb steak fajitas on a lettuce wrap
healthy low-carb steak lettuce wraps

Easy, Keto Low-Carb Steak Fajitas with Marinade

Easy, Keto Low-Carb Steak Fajitas with Marinade is a quick healthy recipe that uses flank, sirloin, or skirt steak to grill juicy carne asada beef fajitas. This recipe includes instructions to prepare homemade seasoning and a marinade that will make your mouth water. Serve the steak and veggies on lettuce wraps or as a bowl.
Save this recipe here.
Course dinner, lunch
Cuisine American, Mexican
Keyword keto fajitas, low carb fajitas, steak fajitas, steak lettuce wraps
Prep Time 20 minutes
Cook Time 15 minutes
marinate 2 hours
Total Time 2 hours 35 minutes
Servings 8
Calories 202kcal

Ingredients

  • 1 pound sirloin steak tips, skirt, or flank steak
  • 1/2 cup sliced red onion
  • 1/4 medium green pepper sliced into thin pieces
  • 1/4 medium red pepper sliced into thin pieces
  • 1/4 medium orange pepper sliced into thin pieces
  • 1/4 medium yellow pepper sliced into thin pieces
  • 1 tablespoon grassfed butter
  • Romaine lettuce slices for wraps

Steak Marinade

Instructions

  • I like to use sirloin tips because they are sliced perfectly for fajitas. You can use whole steaks if you wish and you can slice it before or after cooking.
  • Drizzle the soy sauce over the steak.
  • Combine the seasonings in a bowl.
  • Sprinkle the seasonings on both sides of the steak. Place the steak in a Ziploc bag. Seal the bag, removing all air. Pat the outside of the bag to ensure added soy sauce saturates the meat.
  • Place in fridge to marinate for at least 2 hours, preferably overnight.
  • Once the steak has finished marinating, place a grill on medium-high heat. Allow the grill to heat for 4-5 minutes.
  • Add the steak and grill until preferred doneness. Use a meat thermometer and test the interior of the meat to determine when it has finished cooking. The USDA minimum is 145 degrees. Here is a listing of the barometer: rare: 120-130 degrees, medium rare: 130-135 degrees, medium, 135-145 degrees, medium well 145-155 degrees, and well done 155 degrees.
  • Season the veggies with garlic powder and place the vegetables in a grill basket and grill for 7-10 minutes until the veggies are soft and slightly charred.
  • Melt 1 tablespoon of grass-fed butter in the microwave for 30 seconds and stir. After the steak has reached the desired doneness, using a cooking brush, brush the butter onto both sides of the steak while it’s on the grill.
  • Remove the steak from the grill and allow it to cool for 10-15 minutes before serving.
  • Spoon the mixture into the center of a lettuce leaf. Serve!
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Nutrition (displayed with net carbs)

Serving: 1wrap | Calories: 202kcal | Carbohydrates: 4g | Protein: 20g | Fat: 11g
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Nutrition DataMacros are provided as a courtesy and should not be construed as a guarantee. This information is calculated using MyFitnessPal.com. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator. You are solely responsible for ensuring that any nutritional information provided is accurate, complete, and useful.
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Recipe Rating




p3orion

Tuesday 23rd of April 2019

TLDR version: Make fajitas. Use lettuce instead of tortillas.

Simi

Thursday 20th of September 2018

Could you recommend some sort of seasoning for ground turkey? I’d like to make these today, but only have ground turkey.

staysnatched

Thursday 20th of September 2018

Hi there. McCormick's Grill Mates also makes a Montreal Chicken Seasoning that works well for ground turkey.

Megan Pohlman

Thursday 23rd of August 2018

This looks amazing but I don’t think it’s paleo considering it has soy sauce. Though it can be paleo by using coconut aminos instead!

staysnatched

Thursday 23rd of August 2018

Great point. Thanks for catching. I will add the substitute.

Wraps de lechuga con los que no vas a echar de menos el pan - Comida

Thursday 23rd of March 2017

[…] Fuente […]

Hannah Healy

Thursday 23rd of February 2017

Wow the colors on these photos are so vibrant.