Grilled Flat-Iron Steaks with Herb-Caper Sauce

  • Level: Easy
  • Yield: 4 servings
  • Total: 25 min
  • Active: 20 min
Flatiron steaks are a fantastic choice for a weeknight or dinner party. They are tender and fairly lean and do just as well on the grill as in a hot skillet. They can have a robust flavor, so you can pair them with strong sauces like the mustardy caper and herb sauce in this recipe without overwhelming the meat.
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Ingredients

2 tablespoons grainy mustard

2 tablespoons extra-virgin olive oil, plus more as needed

2 tablespoons capers in brine, drained and chopped

1 tablespoon red wine vinegar

2 teaspoons packed light brown sugar

1 teaspoon Worcestershire sauce

1 small clove garlic, finely grated

2 tablespoons chopped fresh parsley

2 tablespoons finely chopped fresh chives

Kosher salt and freshly ground pepper

4 flat-iron steaks (about 8 ounces each)

Directions

  1. Preheat a grill to medium-high. Stir together the mustard, olive oil, capers, vinegar, 1 teaspoon brown sugar, the Worcestershire sauce and garlic in a large bowl. Stir in the parsley, chives and 2 tablespoons water and season with salt and pepper; set the caper sauce aside.
  2. Lightly rub the steaks with olive oil. Mix together 2 teaspoons salt, 1 teaspoon pepper and the remaining 1 teaspoon brown sugar, then rub on both sides of the steaks. Oil the grill grates. Grill the steaks 3 to 5 minutes per side for medium-rare, depending on the thickness. Remove to a cutting board and let rest 5 to 10 minutes.
  3. Slice the steaks against the grain and top with some of the caper sauce; serve the rest on the side.

Cook’s Note

Always slice your steak against the grain: Tough muscle fibers run in one direction, and slicing perpendicular to these fibers shortens them so the meat will be more tender.

Let's Get Cooking!

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Anonymous

Steak was tender and juicy and the sauce is amazing!

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