Follow these simple steps to create your Ham and Cheese Sliders on Hawaiian Rolls:

1. Preheat Oven: Preheat your oven to 350°F (175°C).

2. Prepare Baking Dish: Lightly grease a 9×13 inch baking dish.

3. Slice Rolls: Without separating them, slice the Hawaiian rolls in half horizontally.

4. Layer Ham: Place the bottom half of the rolls in the baking dish. Layer with the sliced ham evenly.

5. Add Cheese: Top the ham with slices of Swiss cheese, spreading out evenly.

6. Cover with Rolls: Place the top halves of the Hawaiian rolls on top of the cheese.

7. Prepare Butter Mixture: In a small bowl, mix the melted butter, Dijon mustard, poppy seeds, garlic powder, salt, and pepper together until well blended.

8. Brush Rolls: Generously brush the butter mixture over the top of the sliders.

9. Bake: Cover the baking dish with aluminum foil and bake for 10 minutes. Remove the foil and bake for an additional 5 minutes or until the cheese is melted and the rolls are golden brown.

10. Serve: Once done, remove from the oven and let cool slightly before slicing into individual sliders.

These steps will result in sliders that are deliciously satisfying and perfect for serving at any gathering.