Creating Hawaiian Roll Sliders can be a simple and enjoyable process if you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Baking Dish: Grease a 9×13-inch baking dish with cooking spray or butter.
3. Slice the Rolls: Without separating the rolls, slice the entire batch in half horizontally.
4. Layer the Bottom: Place the bottom half of the rolls in the prepared baking dish.
5. Add the Filling: Layer the sliced ham evenly over the bottom rolls, followed by the turkey.
6. Add the Cheese: Place a slice of Swiss cheese on top of the meat layer.
7. Replace the Top: Place the top half of the rolls over the cheese.
8. Make the Butter Glaze: In a bowl, mix melted butter, Dijon mustard, poppy seeds, dried onion flakes, salt, and pepper.
9. Brush the Sliders: Pour the butter mixture evenly over the top of the rolls, ensuring all are coated.
10. Cover with Foil: Cover the baking dish with aluminum foil.
11. Bake: Bake in the preheated oven for 15 minutes.
12. Uncover and Brown: Remove the foil and bake for an additional 5 minutes, or until the tops are golden brown.
13. Serve Warm: Allow to cool slightly before slicing into individual sliders.

These steps will guide you in creating these incredible Hawaiian Roll Sliders effortlessly.