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Prepare the steak marinade: In a shallow dish or a large resealable plastic bag, combine 1/4 cup olive oil, 2 tablespoons red wine vinegar, 1 tablespoon Worcestershire sauce, 1 tablespoon soy sauce, 3 minced garlic cloves, 1 teaspoon dried oregano, 1/2 teaspoon black pepper, and 1/2 teaspoon salt. Mix well.

Add the flank steak to the marinade, ensuring it's fully coated. Seal the bag or cover the dish and refrigerate for at least 2 hours, or up to 8 hours for best flavor. Flip the steak occasionally if using a dish.

While the steak marinates, prepare the chimichurri sauce: In a medium bowl, combine the finely chopped fresh parsley, fresh cilantro, 3 minced garlic cloves, 1/4 cup red wine vinegar, 1/2 cup extra virgin olive oil, 1/2 teaspoon red pepper flakes, 1/2 teaspoon dried oregano, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Stir well to combine. Taste and adjust seasoning as needed. Set aside at room temperature.

Remove the steak from the refrigerator at least 30 minutes before cooking to bring it closer to room temperature. Discard the marinade.

Preheat a grill or a heavy-bottomed skillet (cast iron works great) to medium-high heat. Lightly oil the grill grates or skillet.

Place the flank steak on the hot grill or skillet. Cook for 5-7 minutes per side for medium-rare (internal temperature of 130-135°F), or longer for desired doneness. Use a meat thermometer to check.

Once cooked, transfer the steak to a cutting board and let it rest for 5-10 minutes before slicing. Resting allows the juices to redistribute, resulting in a more tender steak.

Slice the flank steak against the grain into thin strips. Serve immediately, drizzled generously with the fresh chimichurri sauce.


Prepare the steak marinade: In a shallow dish or a large resealable plastic bag, combine 1/4 cup olive oil, 2 tablespoons red wine vinegar, 1 tablespoon Worcestershire sauce, 1 tablespoon soy sauce, 3 minced garlic cloves, 1 teaspoon dried oregano, 1/2 teaspoon black pepper, and 1/2 teaspoon salt. Mix well.

Add the flank steak to the marinade, ensuring it's fully coated. Seal the bag or cover the dish and refrigerate for at least 2 hours, or up to 8 hours for best flavor. Flip the steak occasionally if using a dish.

While the steak marinates, prepare the chimichurri sauce: In a medium bowl, combine the finely chopped fresh parsley, fresh cilantro, 3 minced garlic cloves, 1/4 cup red wine vinegar, 1/2 cup extra virgin olive oil, 1/2 teaspoon red pepper flakes, 1/2 teaspoon dried oregano, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Stir well to combine. Taste and adjust seasoning as needed. Set aside at room temperature.

Remove the steak from the refrigerator at least 30 minutes before cooking to bring it closer to room temperature. Discard the marinade.

Preheat a grill or a heavy-bottomed skillet (cast iron works great) to medium-high heat. Lightly oil the grill grates or skillet.

Place the flank steak on the hot grill or skillet. Cook for 5-7 minutes per side for medium-rare (internal temperature of 130-135°F), or longer for desired doneness. Use a meat thermometer to check.

Once cooked, transfer the steak to a cutting board and let it rest for 5-10 minutes before slicing. Resting allows the juices to redistribute, resulting in a more tender steak.

Slice the flank steak against the grain into thin strips. Serve immediately, drizzled generously with the fresh chimichurri sauce.
