ACE Bakery Beef Tenderloin Sliders

Ingredients

• ACE Bakery® Ciabatta Lunga Cluster
• 1 lb beef tenderloin, trimmed of all exterior fat and silver skin
• 1 tsp. kosher salt
• ½ tsp. freshly ground black pepper
• ½ cup unsalted butter
• 2 tbsp. stone-ground Dijon mustard
• 2 tbsp. minced fresh herbs (chives, tarragon, parsley, and chervil, marjoram or savory)
• Salt and freshly ground black pepper, to taste
• ⅔ cup mayonnaise
• 1 tsp. capers, drained and chopped
• 1 tsp. cornichons, finely chopped
• 1 tbsp. chives, finely sliced
• 1 tbsp. fresh tarragon, finely chopped
• 1 tbsp. fresh parsley, finely chopped
• 1 tbsp. fresh chervil, marjoram or savory, finely chopped
• 1 tbsp. stone-ground Dijon mustard
• ¼ tsp anchovy paste
• Dash of Worcestershire sauce, to taste
• Dash of tabasco sauce, to taste
• Fresh chives for garnish