Preheat the oven to 350°F (175°C).
Slice the slider rolls in half horizontally without separating them.
Place the bottom halves of the rolls in a greased baking dish.
Layer half of the ham evenly over the bottom rolls.
Add a slice of Swiss cheese on top of the ham.
Repeat the layering with the remaining ham and cheese.
Place the top halves of the rolls over the cheese.
In a bowl, mix melted butter, Dijon mustard, Worcestershire sauce, poppy seeds, salt, and pepper.
Brush the butter mixture generously over the tops of the rolls.
Cover the baking dish with aluminum foil and bake for 15 minutes.
Remove the foil and bake for an additional 5 minutes until golden brown.