Creating ham and Swiss sliders is simple if you follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Baking Dish: Grease a 9×13-inch baking dish with cooking spray or butter.
3. Layer Buns: Place the slider buns in the baking dish and cut them in half horizontally, keeping the tops and bottoms connected.
4. Add Ham: Layer the sliced ham evenly over the bottom halves of the buns.
5. Add Cheese: Place a slice of Swiss cheese on top of the ham for each slider.
6. Combine Butter and Mustard: In a small bowl, mix the melted butter and Dijon mustard until smooth.
7. Brush Mixture: Drizzle or brush the butter-mustard mixture over the tops of the slider buns.
8. Add Seasoning: If desired, sprinkle poppy seeds and garlic powder over the top for added flavor.
9. Bake: Cover the baking dish with aluminum foil and bake for 20 minutes. Then, remove the foil and bake for an additional 5-10 minutes, or until the tops are golden brown.
10. Serve Warm: Remove from the oven and let cool for a few minutes. Slice and serve warm.

These simple steps will guide you in creating mouth-watering ham and Swiss sliders that everyone will adore.