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Grilled Flank Steak with Herby-Green Sauce Recipe

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4.2 from 86 reviews

This Grilled Flank Steak with Herby-Green Sauce recipe offers a flavorful and tender beef dish, marinated in a balsamic and avocado oil mixture, grilled to perfection over medium-high heat, and served with a fresh, vibrant parsley-based sauce. Perfect for a satisfying dinner that combines smoky char with bright, zesty accompaniments.

  • Total Time: 3 hours 22 minutes
  • Yield: 4 servings

Ingredients

For the Flank Steak and Marinade

  • 1 – 1 ¼ lbs. beef flank steak
  • ¼ cup balsamic vinegar
  • 2 tablespoons avocado oil
  • 1½ teaspoons dried Italian seasoning
  • ½ teaspoon garlic powder
  • ¼ teaspoon onion powder
  • ¼ teaspoon fine salt
  • ⅛ teaspoon black pepper

For the Herby-Green Sauce

  • 2 cups fresh flat-leaf (Italian) parsley leaves (about 1 bunch)
  • 2 tablespoons lemon juice (about ½ medium lemon)
  • 1 garlic clove, peeled
  • 3 tablespoons extra-virgin olive oil
  • ¼ teaspoon fine salt
  • ⅛ teaspoon black pepper
  • Pinch of red pepper flakes (optional)

Instructions

  1. Prepare the Marinade: In a small bowl, whisk together balsamic vinegar, avocado oil, garlic powder, onion powder, Italian seasoning, salt, and pepper until well combined.
  2. Marinate the Flank Steak: Place the flank steak in a large zip-top bag or a shallow covered dish. Pour the marinade over the steak, ensuring it is evenly coated. Seal and refrigerate for 3-4 hours, up to 12 hours for greater flavor, flipping occasionally.
  3. Bring Steak to Room Temperature: Remove the steak from the refrigerator 20 minutes prior to grilling to temper while you preheat the grill.
  4. Make the Herby-Green Sauce: In a food processor or blender, combine parsley, lemon juice, garlic, olive oil, salt, pepper, and optional red pepper flakes. Process until almost smooth, scraping down the sides as needed. Set aside.
  5. Preheat the Grill: Heat the grill to medium-high temperature, about 425-450°F, ensuring it’s clean and oiled.
  6. Prepare Steak for Grilling: Remove steak from marinade, discarding marinade. Place steak on a clean plate and season both sides with salt and pepper.
  7. Grill the Steak: Place steak on grill grate directly over heat. Grill 5-6 minutes per side until desired doneness, aiming for 145°F for medium-rare or 160°F for medium, using a thermometer to check.
  8. Rest and Slice Steak: Remove steak from grill and transfer to a plate. Let rest for 5 minutes before slicing diagonally against the grain. Serve with the herby-green sauce and enjoy.

Notes

  • Marinating the steak overnight enhances flavor and tenderness.
  • Use a meat thermometer for precise doneness to avoid overcooking.
  • Allowing the steak to rest after grilling helps retain juices.
  • Herby-green sauce can be made ahead and refrigerated for up to 24 hours.
  • Optional red pepper flakes add a slight heat to the sauce, adjust as preferred.
  • Author: ELLA
  • Prep Time: 10 minutes
  • Cook Time: 12 minutes
  • Category: Main Course
  • Method: Grilling
  • Cuisine: American

Find it online: https://ellarecipe.com/grilled-flank-steak-with-herby-green-sauce-recipe/