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5 from 3 votes

Marinated Flank Steak Asado + Chimichurri

An easy recipe for marinated flank steak cooked on the grill and served with a homemade + herby chimichurri sauce that is out of this world good.
Course Main Course
Cuisine Argentinian
Keyword marinated flank steak
Prep Time 30 minutes
Cook Time 15 minutes
Marinating + Resting Time 8 hours 10 minutes
Total Time 45 minutes
Servings 6
Calories 496kcal
Author Buy This Cook That


For the Marinated Flank Steak

  • 2 pounds flank steak
  • 1/3 cup extra virgin olive oil
  • 1/4 cup apple cider vinegar
  • 4 dried fresno chiles crushed
  • 4 cloves garlic crushed
  • 1 green onion rough chopped
  • 3/4 teaspoon sea salt
  • 1/2 teaspoon black pepper

For the Chimichurri Sauce

  • 1 bunch flat leaf parsley finely chopped (about 3/4 cup chopped)
  • 1/2 cup extra virgin olive oil
  • 4 cloves garlic finely minced
  • 3 tablespoons lemon juice
  • 2 dried or fresh red chiles optional, seeded or unseeded to desired heat level
  • 1 tablespoon oregano finely chopped
  • 1 teaspoon sea salt
  • 1/2 teaspoon black pepper


For the Marinated Flank Steak

  • In a shallow dish, combine all ingredients except the steak. 
  • Place the flank steak in the marinated, turning to coat well on all sides. Cover and refrigerate overnight. Turn the steak every few hours.
  • When the flank steak is ready to cook, heat a grill to very high heat, around 450 degrees.  Shake the excess marinade from the steak and place the steak directly on the grill.
  • Cook for 4 minutes, rotate 45 degrees, and cook for another 3 minutes. Flip and repeat, cooking for 4 minutes, rotating and another 3 minutes.
  • Remove the flank steak from the grill and cover with foil. Let rest for 15 minutes.
  • Transfer the grilled marinated flank steak to a cutting board. Using a serrated knife, slice the flank steaks in thin strips across the grain. Serve warm with roasted vegetables and chimichurri sauce.

For the Chimichurri Sauce

  • Combine all ingredients well in a bowl or jar. 
  • Let rest at room temperature for at least 30 minutes. Serve with your favorite grilled meats and vegetables. 


If you do not have time to marinate overnight, at least marinate for 3 hours. (Or use a vacuum sealer system for quick marinating.)
Cooking times of your flank steak will vary based on thickness of steak, grill temperature, grill type and preferred doneness. 
To control the heat level of your chimichurri sauce, you can leave out the chiles.


Serving: 1g | Calories: 496kcal | Carbohydrates: 5g | Protein: 33g | Fat: 37g | Saturated Fat: 7g | Cholesterol: 90mg | Sodium: 767mg | Potassium: 664mg | Fiber: 1g | Sugar: 1g | Vitamin A: 1065IU | Vitamin C: 38.7mg | Calcium: 68mg | Iron: 3.6mg