Keto Steak Fajitas with Homemade Seasoning 🥩

Looking for a lively midweek meal to perk up your days? Take our Keto Steak Fajitas for a spin! Bursting with juicy steak and vibrant vegetables, these fajitas present a low-carb twist on the well-loved Mexican favorite. The best part? They're incredibly easy to prepare.

Preparation and cooking overview

Start by marinating the flank steak with a combination of homemade fajita seasoning, mustard, and olive oil. Once marinated, pan-sear the steak and slice it into thin pieces once cooked. Next, sauté the sliced steak along with the colorful assortment of veggies. In less than 30 minutes, you'll have a delicious meal!

Chef's note

For an added smoky flavor, grill the bell peppers and onions before adding them to the fajitas. This will lend a delicious depth of taste to the dish. If you want to explore, experiment with various fajita seasoning blends, tailoring the flavors to suit your preferences. You can sprinkle some chili flakes and squeeze fresh lemon juice over the steak before serving.

For more inspiration check out our Beef recipe.

🥩 Ingredients for this keto steak fajitas recipe

Let's make some low-carb steak fajitas with these basic ingredients!

For the keto fajita seasoning

For the fajitas

Ingredient substitutions

If you want to switch things up, here are some keto-friendly alternatives:

Additional ingredients

Here are a few optional enhancements to add a fun twist to your steak fajitas:

Cooking tools required

To make this Keto Steak Fajitas recipe, you will need the following kitchen tools:

Tools substitute options

How to make Keto Steak Fajitas: step-by-step guide

Cooking methods

Preparation steps

1. Gather all the ingredients.
2. Measure them in precise quantities.
3. Use a kitchen towel to pat dry the steak, ensuring it is moisture-free.
4. Wash the cilantro thoroughly under cool running water and chop it finely.

Cooking instructions

For the steak seasoning and the marinade

1. Prepare the homemade fajita seasoning by combining the dry ingredients. Remember to set aside 1 ½ teaspoons of the seasoning for later use.
2. Mix two tablespoons of olive oil in a small bowl, the finely chopped cilantro, mustard, fresh lime juice, and the fajita seasoning you prepared earlier. This mixture will serve as the marinade.
3. Take a large zip-top bag and place the steak inside it. Pour the marinade over it, reserving one tablespoon for later use. Massage the bag gently to ensure the steak is evenly coated with the marinade. Set the bag aside and allow it to marinate.
4. While the steak is marinating, cut the red onion and bell peppers into thin strips, preparing them for cooking.

Preparing the steak

1. Heat one tablespoon of olive oil in a large skillet over medium-high heat.
2. Add the onion to the skillet and cook for approximately 5 minutes, stirring occasionally, until it becomes soft and translucent.
3. Toss in the bell peppers and sprinkle them with the reserved fajita seasonings. Cook for 3-5 minutes if you prefer crispy peppers or 6-8 minutes for softer peppers while stirring occasionally.
4. Transfer the cooked veggies to a serving plate and set them aside.
5. In the same skillet, melt some butter and add the marinated steak. Allow it to sear for 3 to 4 minutes on each side, adjusting the cooking time depending on how well done you prefer your steak.
6. Once cooked, transfer the seared steak to a cutting board and let it rest for at least 5 minutes to ensure tender meat.
7. Pour the reserved steak marinade into the skillet and briefly heat it, stirring gently.
8. Cut the steak into strips.
9. Add the thinly sliced steak strips to the skillet and toss them in the heated marinade until warm. Remove the skillet from the heat.
10. Arrange the steak slices over the bed of peppers and serve the fajitas while they're still hot.

Chef's pro tip

Use a meat thermometer to check its internal temperature. Aim for 130-135°F (55-57°C) for medium-rare. Also, give the seared meat a good 5-minute rest before you slice into it. This resting period ensures the meat remains tender and juicy.

What to serve with keto steak fajitas?

Pair this hearty meal with a keto-friendly side dish for a satisfying dinner. The options are as follows:

How to make it healthier?

Time-saving tips

What can I prepare ahead of time?

Storage and reheating instructions

Storage instructions

Reheating best practices

Note: To avoid drying out the fajitas, lightly sprinkle some water or broth over the leftovers prior to reheating.

Recipe wrap-up and conclusion

This Keto Steak Fajitas recipe makes an excellent addition to your collection of keto meals. Whether you're serving it up for family dinner or indulging in a fulfilling solo lunch, the pairing of succulent steak and sautéed veggies is sure to delight your palate.

Frequently asked questions

📖 Recipe

Keto Steak Fajitas

This recipe features Keto Steak Fajitas that are loaded with juicy steak, colorful veggies, and homemade fajita seasoning, offering a low-carb twist on the classic Mexican dish.

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Course: dinner, Main Course

Cuisine: Mexican

Keyword: Keto fajitas, low carb steak fajitas, steak dish, steak fajitas

Prep Time: 12 minutes minutes

Cook Time: 15 minutes minutes

Total Time: 27 minutes minutes

Servings: 4

Calories: 422kcal

Ingredients

For keto fajita seasoning

• 1 teaspoon chili powder
• 1 teaspoon cumin
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon paprika
• ½ teaspoon sea salt
• ¼ teaspoon freshly cracked black pepper

For the fajitas

• 3 tablespoons olive oil
• ¼ cup fresh cilantro leaves chopped, plus more for serving
• Juice from 1 lime
• 1 tablespoon Dijon mustard
• 1½ pounds flank steak
• 3 bell peppers red, yellow, and green
• 1 medium red onion
• 2 tablespoons unsalted butter

US Customary - Metric

Instructions

For the steak seasoning and the marinade

• Prepare the homemade fajita seasoning by combining the dry ingredients. Remember to set aside 1 ½ teaspoons of the seasoning for later use.
• Mix two tablespoons of olive oil in a small bowl, the finely chopped cilantro, mustard, fresh lime juice, and the fajita seasoning you prepared earlier. This mixture will serve as the marinade.
• Take a large zip-top bag and place the steak inside it. Pour the marinade over it, reserving one tablespoon for later use. Massage the bag gently to ensure the steak is evenly coated with the marinade. Set the bag aside and allow it to marinate.
• While the steak is marinating, cut the red onion and bell peppers into thin strips, preparing them for cooking.

Preparing the steak

• Heat one tablespoon of olive oil in a large skillet over medium-high heat.
• Add the onion to the skillet and cook for approximately 5 minutes, stirring occasionally, until it becomes soft and translucent.
• Toss in the bell peppers and sprinkle them with the reserved fajita seasonings. Cook for 3-5 minutes if you prefer crispy peppers or 6-8 minutes for softer peppers while stirring occasionally.
• Transfer the cooked veggies to a serving plate and set them aside.
• In the same skillet, melt some butter and add the marinated steak. Allow it to sear for 3 to 4 minutes on each side, adjusting the cooking time depending on how well done you prefer your steak.
• Once cooked, transfer the seared steak to a cutting board and let it rest for at least 5 minutes to ensure tender meat.
• Pour the reserved steak marinade into the skillet and briefly heat it, stirring gently.
• Cut the steak into strips.
• Add the thinly sliced steak strips to the skillet and toss them in the heated marinade until warm. Remove the skillet from the heat.
• Arrange the steak slices over the bed of peppers and serve the fajitas while they're still hot.

Video

Nutrition

Nutrition Facts

Keto Steak Fajitas

Amount Per Serving

Calories 422 Calories from Fat 225

% Daily Value*

Fat 25g38%

Saturated Fat 9g56%

Trans Fat 0.2g

Polyunsaturated Fat 2g

Monounsaturated Fat 13g

Cholesterol 117mg39%

Sodium 438mg19%

Potassium 867mg25%

Carbohydrates 10g3%

Fiber 3g13%

Sugar 5g6%

Protein 38g76%

Vitamin A 3442IU69%

Vitamin C 117mg142%

Calcium 64mg6%

Iron 4mg22%

*

Nutritional values are estimates only and do not include carbs from sugar alcohols.

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