01Preheat oven to 350 F. Mix butter, garlic and parsley together in small bowl until combined.
02Slice all 12 rolls, without separating, horizontally in half. Place bottom halves in a 9 x 13 baking dish. Spread mustard evenly over bottom buns. Top with a layer of ham, Swiss cheese, pickle chips and remaining roll lids. Brush roll lids with butter mixture. Bake until bread is golden brown, about 20 minutes. Separate into individual sliders and enjoy.