Note: Taylor Pork Roll, also known as Taylor Ham, is a seasoned pork product from New Jersey. It can be ordered online from jerseyporkroll.com. If unavailable, you can also use thin slices of Spam.
Heat a large cast iron or non-stick skillet over medium heat. Stack pork roll slices and cut a single notch from the center to the edge of the stack. Lay pork roll slices in a single layer in the skillet (you may need to work in batches) and fry until browned on both sides, about 4 minutes. Set aside.
Assemble sandwiches: Lay four slices of bread on a cutting board. Place a slice of swiss cheese on each. Divide half of cole slaw evenly between two slices of bread. Top each with half of pork roll. Top each stack of pork roll with half of dressing. Top with remaining cole slaw. Close sandwiches and press gently to compess.
Reduce heat to medium-low or preheat sandwich press to medium. Melt butter in skillet or in sandwich press. Place sandwiches in skillet or press and cook until even golden brown, pressing gently and flipping half way through cooking, about 10 minutes total. Serve immediately.
Large non-stick of cast iron skillet, or a sandwich press