Sous Vide Flank Steak Fajitas

Try this classic beef Flank Steak Fajita recipe with colorful peppers and onions cooked to perfection.

  • 1 hr
    45 min
  • 4
  • 320
  • 28 g

Ingredients & Cooking


  • 1 pound beef Flank Steak
  • 2 red bell peppers, trimmed, seeded, thinly sliced
  • 1 green bell pepper, trimmed, seeded, thinly sliced
  • 1 Vidalia onion, halved and sliced thin
  • 1 clove minced garlic
  • 1 tablespoon olive oil
  • 1/2 teaspoon kosher salt
  • 2 teaspoons freshly ground black pepper
  • 4 6-inch corn tortillas
  • prepared guacamole (optional)
  • 1/2 cup water
  • 1/3 cup fresh lime juice
  • 1/2 tablespoon fajita seasoning
  • 1/2 tablespoon garlic powder


  1. Attach sous vide wand to stock pot. Fill pot with water according to manufacturer's instructions.
  2. Preheat sous vide wand to 141°F.
  3. Combine marinade ingredients in small bowl. Place steak and marinade in food-safe plastic bag; turn to coat. Seal bag, removing as much air as possible, and marinate in refrigerator for 1 hour.

  4. Cook's Tip: For best results use a vacuum sealer.
  5. Meanwhile, add peppers, onions, garlic, olive oil, salt and pepper to a food-safe plastic bag; toss to coat. Seal bag, removing as much air as possible.
  6. Remove steak from refrigerator and submerge both bags in water. Set timer for 90 minutes.
  7. At end of cooking time, carefully remove bags from pot. 
  8. Preheat grill pan or grill, and cook steak 2 to 3 minutes on each side or until internal temperature reaches 145°F. Carve steak diagonally across the grain into thin slices. Place steak slices on tortillas; top with vegetables. Season with salt and pepper, as desired. Serve with guacamole, if desired.

Safe Handling Tips

Nutrition Information

Butcher Counter

Flank Steak Flank Primal

Lean and boneless with lots of intense beef flavor. Best when marinated and grilled or sliced thin and stir-fried.
Beef Checkoff


beef faq's

We all know beef tastes great – but did you know that beef can be good for you, too? Check out some answers to your most pressing questions when it comes to incorporating beef into a heart-healthy lifestyle.

Learn More


rethink the ranch

Much has changed since the days of cowboys, cattle drives and the Old West. Today, it's more about drones, apps and computers. Join us as we travel across the country talking to real, modern ranchers.

Learn More


cooking lessons

Curious about the best way to braise a roast? Want to know how to make a delicious stir-fry or perfectly brown Ground Beef? Our cooking lessons have everything that you need!

Learn More


rancher recipes

Crafted by ranchers across America, these recipes are flavorful, nutritious and proven to satisfy the heartiest of appetites.

see recipes