Steak Frites With Herb Mustard

Total Time:
40 min
10 min
30 min

4 servings

  • 3 tablespoons dijon mustard
  • 1 tablespoon extra-virgin olive oil
  • 1 1/4 pounds flank steak, trimmed of excess fat
  • Freshly ground black pepper
  • 2 tablespoons minced fresh chives
  • 1 tablespoon minced fresh tarragon
  • 2 pounds large russet potatoes
  • 2 large egg whites
  • 1 teaspoon paprika
  • Pinch of cayenne pepper
  • Kosher salt
  • Olive oil cooking spray
  • Preheat the oven to 450 degrees F. Whisk the mustard and olive oil in a small bowl. Coat the steak with 2 tablespoons of the mustard mixture, then season with black pepper and set aside. Whisk the chives, tarragon and 2 tablespoons cold water into the remaining mustard mixture.

  • Slice the potatoes into 1/4-inch-thick sticks; pat dry. Whisk the egg whites, paprika, cayenne and 1/4 teaspoon salt in a large bowl; add the potatoes and toss. Coat a rimmed baking sheet with cooking spray. Add the potatoes, letting the excess egg drip off; spread out and spray with cooking spray. Bake until golden brown, 25 minutes.

  • Meanwhile, cook the steak: Sprinkle 1/4 teaspoon salt in a large cast-iron skillet. Heat the pan over high heat until very hot, then add the steak and place another heavy skillet on top to weigh it down. Sear until browned, about 3 minutes per side. Turn off the heat and let the steak rest in the pan, 5 to 8 more minutes for medium rare. Thinly slice against the grain and serve with the fries and herb mustard.

  • Per serving: Calories 460; Fat 16 g (Saturated 5 g); Cholesterol 54 mg; Sodium 619 mg; Carbohydrate 43 g; Fiber 3 g; Protein 37 g

  • Photograph by Antonis Achilleos

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    This recipe is featured in:

    Healthy Weeknight Dinners