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Grilled Flank Steak with Cucumber-Yogurt Sauce

Scott Phillips

Servings: 4

Since flank steak is relatively inexpensive, why not grill two at once? After a long soak in a bold, garlicky marinade, the first makes a great fast and easy meal. The leftover steak is great in Open-Face Steak Sandwiches with Herbed Goat Cheese and TomatoesGrilled Steak and Arugula Salad with White Beans and Shiitake, and Red Onions Stuffed with Grilled Steak, Spinach, and Feta. This do-ahead sauce is an easy take on tzatziki, the Greek yogurt dip.


For the flank steaks

  • 1-1/2 cups coarsely chopped fresh flat-leaf parsley
  • 1/3 cup coarsely chopped fresh mint
  • 3 Tbs. coarsely chopped fresh rosemary
  • 8 medium cloves garlic, peeled
  • 1/4 cup fresh lemon juice (from 2 medium lemons)
  • 1/4 cup soy sauce
  • Kosher salt and freshly ground black pepper
  • 1/2 cup extra-virgin olive oil
  • 2 flank steaks (about 3 lb. total), trimmed of excess fat

For the sauce

  • 1 English cucumber (about 3/4 lb.)
  • Kosher salt
  • 1 cup plain yogurt, preferably Greek
  • 1 tsp. minced garlic
  • 1 tsp. cumin seeds, toasted and lightly crushed with a mortar and pestle or spice grinder
  • 1 tsp. finely grated lemon zest
  • 1/2 tsp. fresh lemon juice
  • Pinch cayenne
  • 1/2 Tbs. extra-virgin olive oil
  • Freshly ground black pepper

Nutritional Information

  • Calories (kcal) : 390
  • Fat Calories (kcal): 200
  • Fat (g): 22
  • Saturated Fat (g): 10
  • Polyunsaturated Fat (g): 1
  • Monounsaturated Fat (g): 10
  • Cholesterol (mg): 85
  • Sodium (mg): 490
  • Carbohydrates (g): 7
  • Fiber (g): 1
  • Protein (g): 40


Marinate the flank steaks

  • Set aside 2 Tbs. of the parsley. Combine the remaining parsley with the mint, rosemary, and garlic in a food processor and pulse until finely chopped. Add the lemon juice, soy sauce, 1 tsp. salt, and 1 tsp. pepper and process until smooth. With the motor running, add the olive oil in a thin stream.

    Put the steaks in a nonreactive baking dish large enough to hold them both. Pour the marinade over them and turn to coat. Cover and refrigerate for at least 4 hours or overnight, turning occasionally.

Make the sauce

  • Cut the cucumber in half lengthwise and remove the seed core. Cut each half crosswise into 1/8-inch-thinck half moons and toss with 1/2 tsp. salt in a medium bowl. Let sit for 10 minutes to release excess liquid. Rinse, drain, and pat dry.

    In a medium bowl, combine the cucumber with the yogurt, garlic, cumin, lemon zest and juice, and cayenne. Stir in the olive oil and the reserved chopped parsley, and season to taste with salt and pepper. Refrigerate until ready to use. (The sauce can be made up to a day ahead.)

Grill the steaks

  • Remove the steaks from the refrigerator 1 hour prior to cooking.

    Prepare a medium-high gas or charcoal grill fire. Clean and oil the grill grates.

    Remove the flank steak from the marinade, wipe off any excess, and season generously with salt and pepper. Grill the steaks, covered, until grill marks form and the steaks have a nice brown sear, 5 to 6 minutes. Flip the steaks and continue grilling until grill marks form on the other side and the steak is cooked to medium rare (an instant-read thermometer inserted in the thickest part of a steak should read 135°F), 3 to 5 minutes more. Let rest 10 to 15 minutes.

    Cut the flank steak across the grain and serve with the cucumber-yogurt sauce on the side. Store the leftover steak in an airtight container and refrigerate for up to 4 days.

Serve with grilled peppers, red onions, and portabello mushrooms, or in keeping with the flavors in the sauce, try Grilled Vegetable Salad with Feta on the side.


Rate or Review

Reviews (17 reviews)

  • christinawo | 07/20/2017

    This is our new favorite marinade for flank steak. Delicious!. The meat marinated for 6 hours and it was great.

  • gwendav0326 | 09/14/2013

    Awsome steak marinade. Sauce needs a little tweaking. I think a litle more lemon juice and dill should do it. Maybe a bit more cayenne for spice. Delicious overall!

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