HAM AND CHEESE SLIDERS

Steps:

• Preheat the oven to 350 degrees F (175 degrees C). Line a 9-inch square baking pan with aluminum foil and spray with cooking spray.
• Slice attached rolls in half widthwise with a serrated knife, keeping rolls connected, into a bottom and top 'slab.' Place bottom slab in the prepared pan.
• Layer about half the ham evenly over the bottom slab of rolls. Layer Swiss cheese evenly on top, and arrange remaining ham over the cheese. Cover with the top slab.
• Place butter in a microwave-safe bowl. Heat in the microwave until melted, about 1 minute. Add mustard, poppy seeds, Worcestershire sauce, onion, salt, and pepper. Whisk to combine.
• Pour butter mixture evenly and slowly over the rolls. Spread over the tops using a spatula; some of the mixture will pool at the base of the rolls. Cover with aluminum foil and let stand at room temperature for 5 to 10 minutes.
• Bake in the preheated oven until cheese has melted, about 20 minutes. Uncover and continue baking until browned as desired, 3 to 5 minutes more. Slice into individual sliders.