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Best Steak Fajitas Recipe

Learn how to make Steak Fajitas at home with this easy recipe featuring the best marinade. Serve these sizzling beef fajitas with bell peppers, onions, tortillas or cauliflower rice and guacamole, salsa, and cilantro!

Course Dinner, Main Course
Cuisine Mexican
Prep Time 25 minutes
Cook Time 20 minutes
Total Time 45 minutes
Servings 4 servings
Calories 425 kcal
London Brazil

Ingredients

  • 1 ¼ lbs. flank steak less than 1-inch thick

Steak Fajita Marinade:

  • 2 Tbsp. taco seasoning homemade or store-bought
  • 3 Tbsp. olive oil
  • 3 Tbsp. soy sauce gluten-free, or Tamari sauce
  • 3 Tbsp. lime juice
  • 1 Tbsp. honey
  • 1 Tbsp. Worcestershire sauce gluten-free

Steak Fajitas:

  • 2 Tbsp. olive oil
  • 2 bell peppers red, green, or yellow, thinly sliced
  • 1 red onion thinly sliced
  • ½-¾ tsp. salt to taste
  • ¼ tsp. black pepper to taste

To Serve:

  • Corn tortillas optional
  • Rice or cauliflower rice optional
  • Avocado, sour cream, or cilantro optional

Instructions

  1. In a large bowl combine steak fajita marinade ingredients. Whisk to combine.

  2. Add flank steak to the marinade and let soak in the refrigerator for at least 1 hour or up to overnight.

  3. In a large cast-iron skillet over medium-high heat add 2 tablespoons of oil along with the sliced bell pepper and onion. Saute for 7-8 minutes or until vegetables are crisp tender and slightly charred.

  4. Remove vegetables from the skillet and add the steak, letting any excess marinade drip off before adding it to the skillet. Cook steak over medium to medium-high heat for 4-5 minutes per side, or until cooked to your desired doneness.

  5. Let steak rest on a cutting board for 5 minutes before slicing. Cut steak into thin ¼" slices against the grain.

  6. Serve steak fajitas as a taco with avocado and cilantro or in a bowl with Mexican rice or cauliflower rice. Enjoy!

Recipe Notes

  • Nutrition facts are calculated without any toppings, tortillas, or rice.
  • To make this recipe Whole30 simply substitute coconut liquid aminos for the soy sauce and leave out the honey or replace it with liquid stevia extract.
  • To Store: Keep leftovers in an airtight container in the refrigerator for up to 3-4 days.
  • To Freeze: Seal in a freezer-safe airtight container and freeze for up to 3-6 months.
Nutrition Facts
Best Steak Fajitas Recipe
Amount Per Serving
Calories 425 Calories from Fat 234
% Daily Value*
Fat 26g40%
Saturated Fat 6g38%
Polyunsaturated Fat 2g
Monounsaturated Fat 16g
Cholesterol 85mg28%
Sodium 1570mg68%
Potassium 721mg21%
Carbohydrates 16g5%
Fiber 3g13%
Sugar 9g10%
Protein 33g66%
Vitamin A 2567IU51%
Vitamin C 85mg103%
Calcium 50mg5%
Iron 4mg22%
* Percent Daily Values are based on a 2000 calorie diet.