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Sheet Pan Steak Fajitas are tender, juicy and full of flavor and perfect for busy weeknights! Best of all, options for low carb and keto with a homemade fajita spice blend and cilantro lime marinade.

Sheet Pan Steak Fajitas - Low Carb / Keto / Paleo / Whole30

Sheet Pan Steak Fajitas are tender, juicy and full of flavor and perfect for busy weeknights! Cooks up in under 30 minutes on one pan with options for paleo/ Whole30, low carb and keto with a homemade fajita spice blend.

Course Main Course
Cuisine Mexican
Keyword chinese dinner recipe, mexican, sheet pan, sheet pan dinners, steak, steak fajitas
Prep Time 13 minutes
Cook Time 15 minutes
Total Time 33 minutes
Servings 4 servings
Calories 266 kcal
Author Kelly

Ingredients

SEASONINGS:

  • 2 teaspoons chili powder
  • 1 teaspoon cumin
  • 1 teaspoon garlic powder
  • 1 teaspoons smoked paprika
  • 1/2 - 1 teaspoon sea salt or to taste
  • 1/8 teaspoon cayenne pepper optional or to taste

For the Fajitas:

  • 12 ounces flank steak sliced into 1/4" strips across the grain
  • 3 Tablespoons olive oil divided
  • 1 1/2 Tablespoons fresh cilantro finely chopped
  • juice from 2 limes divided
  • 1/2 teaspoon Worcestershire sauce
  • 4 medium bell peppers thinly sliced (I used red, yellow, orange and green)
  • 1 medium red onion thinly sliced

For Serving:

  • chopped fresh cilantro
  • lime wedges
  • sliced avocado
  • your favorite homemade paleo / Whole30 or store-bought compliant tortillas

FOR LOW CARB: low carb tortillas or cauliflower rice, for serving

FOR MEAL PREP: Lunch containers

Instructions

  1. Preheat oven to 400 degrees and grease a large baking sheet (mine was 18 x 13 - use two if necessary). For easier cleanup, you can also line with parchment paper or foil.

  2. Combine the ingredients for the seasonings in small bowl or bag and mix.

  3. In a large zip-top bag, add the steak and drizzle with 1 1/2 tablespoons olive oil, juice from 1 lime, Worcestershire sauce and chopped cilantro. Sprinkle with 2/3 of the fajita seasonings. Toss to coat well. (If time permits, allow to marinate at least 30 minutes or covered in the fridge for up to 3 hours for maximum flavor).

  4. Spread the vegetables in an even layer on prepared sheet pan. Try not to overlap too much and keep everything in a single layer. (Use two sheet pans if necessary). Drizzle with remaining 1 1/2 tablespoons olive oil and season with remaining one third (1/3) of the seasonings. Toss to coat well.

  5. Bake in preheated oven for 10-15 minutes (depending on how done you like your vegetables) or until peppers are tender. (If steak was marinating in the fridge, remove and allow to sit at room temperature while the vegetables are cooking).
  6. Remove sheet pan from oven, flip and push the vegetables to the sides of the pan. Add steak strips in a single layer to the center of the pan, making sure not to overcrowd the pan. Broil on high for 3 minutes or until desired doneness (flip as needed).

  7. Serve with your favorite homemade or store-bought paleo / low carb / Whole30 tortillas with sliced avocado and your favorite toppings.

  8. To bake tortillas: wrap in aluminum foil and add to the top rack of the oven while the chicken is baking for about 5 minutes.

LOW CARB / KETO OPTION: Serve in low carb tortillas, over salad or cauliflower rice.

FOR MEAL PREP: Divide into lunch containers over cauliflower rice and wrap tortillas separately.

Nutrition Facts
Sheet Pan Steak Fajitas - Low Carb / Keto / Paleo / Whole30
Amount Per Serving (1 serving)
Calories 266 Calories from Fat 135
% Daily Value*
Fat 15g23%
Saturated Fat 3g15%
Cholesterol 51mg17%
Sodium 69mg3%
Potassium 630mg18%
Carbohydrates 11g4%
Fiber 3g12%
Sugar 6g7%
Protein 20g40%
Vitamin A 4295IU86%
Vitamin C 154mg187%
Calcium 40mg4%
Iron 2.6mg14%
* Nutrition facts are provided as a courtesy using the WPRM recipe calculator. It is best to make your own calculations to ensure accuracy. We expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website. Percent Daily Values are based on a 2000 calorie diet.