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Croissant Steak Sandwiches with Caramelized Onions and Horseradish Mayonnaise

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Croissant Steak Sandwiches with Caramelized Onions and Horseradish MayonnaiseBrian Leatart

Marty Rosencranz of River Vale, New Jersey, writes: "Even though I am a professional chef — at the Valley Brook Golf Club in New Jersey — when I cook at home I make dishes that are good but fast. The warm steak sandwich is one of the best things to eat for lunch on a cold day."

Croissant steak sandwiches with caramelized onions and horseradish mayonnaise Although this sandwich tastes great with a croissant, any bread can be used.

Recipe information

  • Yield

    Makes 4 servings

Ingredients

1/2 cup mayonnaise
1/4 cup prepared white horseradish
4 tablespoons (1/2 stick) butter, divided
3 1-inch-thick beef tenderloin steaks
3 medium onions, thinly sliced
8 ounces large shiitake mushrooms, stemmed, caps thinly sliced (about 5 cups)
1 cup beef broth
4 large croissants, halved horizontally, lightly toasted
2 cups arugula

Preparation

  1. Step 1

    Mix mayonnaise and horseradish in small bowl to blend.

    Step 2

    Melt 1 tablespoon butter in heavy large skillet over medium-high heat. Sprinkle tenderloin steaks with salt and pepper. Add steaks to skillet and cook to desired doneness, about 5 minutes per side for medium-rare. Using tongs, transfer steaks to work surface.

    Step 3

    Melt 3 tablespoons butter in same skillet over medium-high heat. Add onions; sauté until dark brown, about 25 minutes. Add mushrooms; sauté until tender, about 5 minutes. Add broth; boil until juices are reduced to glaze, stirring occasionally, about 1 minute. Season onion mixture to taste with salt and pepper.

    Step 4

    Place 1 croissant bottom, cut side up, on each of 4 plates. Spread each with horseradish mayonnaise and top with 1/2 cup arugula. Thinly slice steaks and divide among croissants. Top with onion mixture. Spread remaining mayonnaise on cut side of croissant tops. Place tops on sandwiches.

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