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Flank steaks tacos, three of them, with bowl of chimichurri.
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Flank Steak Tacos with Garlicky Cilantro Chimichurri

Make the best street food at home with these Flank Steak Tacos with Garlicky Cilantro Chimichurri. These tacos are essentially going to be your go-to summer, grilling meal.
Course Main Course
Cuisine American
Keyword Flank Steak Tacos with Garlicky Cilantro Chimichurri
Prep Time 30 minutes
Cook Time 45 minutes
Marinade 1 day
Total Time 1 hour 15 minutes
Servings 8 people
Author Cathy

Ingredients

Marinade:

  • 1/4 cup Dijon mustard
  • 1/4 cup fresh lime juice
  • 1 tbsp soy sauce
  • 1 tsp Worcestershire sauce
  • 2-1/2 lbs flank steak

Chimichurri:

  • 2 cups minced cilantro (or parsley)
  • 2-1/2 tbsps minced garlic (one in the jar works great)
  • 2 tbsp minced fresh oregano
  • 1/4 cup white wine vinegar
  • zest of one lemon
  • 1/4 cup fresh lemon juice
  • 2 teaspoons red pepper flakes
  • 3/4 tsp kosher salt
  • 1/2 cup extra virgin olive oil
  • 16 taco sized flour tortillas, warmed

Instructions

  • Add all marinade ingredients to a large Ziploc bag and let meat sit overnight in the refrigerator. Remove meat from refrigerator and bag 30 minutes prior to cooking.
  • In a medium bowl combine cilantro, garlic, oregano, white wine vinegar, lemon zest and juice, red pepper flakes and kosher salt. Whisk in olive oil. 
  • When ready to cook the meat, start your Traeger grill on smoke with the lid open until the fire is established (4-5 minutes). Set the temperature to 450 degrees F (high) and preheat, lid closed, for 10 to 15 minutes. 
  • Lift the flank steak from the marinade (discard the marinade) and place on the grill grate. Grill with lid closed for 10-12 minutes on each side. However, grilling time will dependent on the thickness and starting temperature of your steak, so it can vary by a lot ~ longer or shorter. Feel free to use the temperature probe and grill to medium-rare.
  • Transfer the steak to a cutting board and let rest for 5 minutes. Slice thinly on the diagonal across the grain. Serve immediately with warm tortillas and chimichurri sauce.