Under 30 Minutes

Broiled Flank-Steak Sandwiches

  • Prep:
  • Total Time:
  • Servings: 4
Broiled Flank-Steak Sandwiches

Photography: WILLIAM MEPPEM

Source: Martha Stewart Living, April 2003

Ingredients

  • 1/4 cup sour cream
  • 1/4 cup mayonnaise
  • 2 tablespoons prepared horseradish
  • 1 tablespoon grainy mustard
  • Coarse salt and freshly ground black pepper
  • 1 1/2 pounds flank steak
  • 3 tablespoons extra-virgin olive oil
  • 1 bunch watercress, tough stems trimmed
  • 1 tablespoon freshly squeezed lemon juice
  • 4 thick slices rustic bread, toasted
  • Roasted Peppers with Garlic and Basil, or store-bought roasted bell peppers, if you prefer

Directions

  1. Make horseradish sauce: In a small bowl, whisk together sour cream, mayonnaise, horseradish, and mustard. Season with salt and pepper. Cover with plastic wrap; refrigerate while preparing steak.

  2. Heat broiler, with rack 6 inches from heat. Season steak well on both sides with salt and pepper; rub with 2 tablespoons oil. Place on a roasting pan fitted with a rack. Broil 6 minutes on each side for medium-rare. Let rest 5 minutes before slicing 1/4 inch thick.

  3. Place watercress in a bowl; toss with remaining tablespoon oil and the lemon juice. Season with salt and pepper. Serve on toasted bread, topped with steak, horseradish sauce, and roasted peppers.

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