Croissant Steak Sandwiches With Caramelized Onions and Horseradi

READY IN: 50mins
Recipe by lazyme

My family loves these sandwiches. We also make them with leftover flank steak, or any other leftover meat.

Top Review by NcMysteryShopper

Great steak sammie! I made my own croissants and I also added provolone cheese. These were a very filling dinner and super easy to make. Thanks Lazyme for an awesome dinner!

Ingredients Nutrition


  1. Mix mayonnaise and horseradish in small bowl to blend.
  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.
  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.
  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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