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