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

Description

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...

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