Creating Baked Ham and Cheese Sliders is incredibly easy if you follow these straightforward 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: Carefully slice the entire pack of slider rolls in half horizontally, keeping the top and bottom connected.
4. Layer the Ham and Cheese: Place the bottom half of the rolls in the baking dish. Layer the ham slices evenly over the rolls, followed by the Swiss cheese slices.
5. Add the Top Half: Place the top half of the rolls back on top of the cheese.
6. Make the Glaze: In a bowl, mix the melted butter, Dijon mustard, brown sugar, onion powder, and poppy seeds (if using).
7. Pour the Glaze: Drizzle the glaze evenly over the top of the rolls, ensuring all are coated.
8. Cover and Bake: Cover the baking dish with aluminum foil and bake for 15 minutes. Then, remove the foil and bake for an additional 10 minutes until the sliders are golden brown and the cheese is melted.
9. Serve: Remove from the oven and let cool for a few minutes before slicing into individual sliders.

These steps will guide you in creating these incredible sliders effortlessly!