Creating Ham and Cheese Sliders is simple when you follow these easy 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. Layer the Buns: Slice the slider buns in half without separating them. Place the bottom halves in the greased baking dish.
4. Add Ham: Layer the sliced ham evenly over the bottom buns.
5. Add Cheese: Place a slice of Swiss cheese on top of the ham.
6. Top with Buns: Place the top halves of the buns over the cheese.
7. Mix Butter and Mustard: In a small bowl, mix the melted butter with the Dijon mustard, garlic powder, onion powder, salt, and pepper.
8. Brush the Mixture: Pour the butter mixture evenly over the tops of the slider buns.
9. Sprinkle Poppy Seeds: If using, sprinkle poppy seeds on top for added flavor and texture.
10. Bake: Cover the dish with aluminum foil and bake for 15 minutes. Remove the foil and bake for an additional 5-10 minutes, or until the tops are golden brown.
11. Cool and Serve: Allow the sliders to cool for a few minutes before slicing them apart and serving.

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