Ingredients

  • 3 8-ounce beef tenderloin steaks
  • 3 tablespoons coarsely cracked black peppercorns
  • 6 tablespoons mayonnaise
  • 2 tablespoons spicy Dijon mustard
  • 1 tablespoon prepared white horseradish, drained
  • 12 mushrooms, thinly sliced
  • 6 tablespoons fresh lemon juice
  • Olive oil
  • 1 pound sliced bacon
  • 6 3- to 4-inch-diameter kaiser, egg, or country-style rolls, cut in half horizontally, toasted if desired
  • 3 cups (packed) baby arugula

Method

  • Coat steaks all over with pepper. Mix mayonnaise, mustard, and horseradish in small bowl for dressing. Cover steaks and dressing separately and refrigerate at least 30 minutes and up to 1 day.
  • Toss thinly sliced mushrooms and lemon juice in medium bowl to coat evenly. Sprinkle lightly with salt. Brush heavy large skillet generously with oil and heat over medium-high heat. Add steaks and cook to desired doneness, about 5 minutes per side for medium-rare. Transfer steaks to plate; let stand 15 minutes. Cook bacon in same skillet over medium-high heat until brown and crisp. Using tongs, transfer bacon to paper towels to drain.
  • Place roll bottoms on plates; spread with dressing. Slice steaks thinly and divide among rolls. Top with bacon, mushrooms, and arugula. Cover sandwiches with roll tops and serve.