Hot Pastrami Sliders are delicious mini sandwiches made with thinly sliced pastrami, melted Swiss cheese, and tangy mustard. These sliders are perfect for parties or as a quick and easy meal. The pastrami is heated until warm and tender, then piled onto slider buns with melted cheese and a spread of mustard. The sliders are then baked until the cheese is melted and bubbly. Serve these hot and flavorful sliders as an appetizer or main dish.