• Mix mayonnaise, Dijon mustard, and prepared horseradish to taste, season with salt & pepper • Thinly Slice Peppered Beef Tenderloin from Perini Ranch • Shave Parmesan cheese • Preheat oven to 375 degrees • Cut Ciabatta bread into ¼ to ½ inch slices • Spray both sides of Ciabatta with olive oil and place on a baking pan • Bake Ciabatta for 14 minutes, turning slices over half-way through • When the crostinis come out of the oven, spread each slice with the horseradish sauce, layer the arugula, beef and Parmesan on top