Creating Ham and Havarti Cheese Sliders is straightforward when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Sliders: Slice the slider buns in half horizontally and arrange the bottom halves in a greased baking dish.
3. Layer the Ham: Place a layer of sliced ham evenly over the bottom halves of the slider buns.
4. Add the Cheese: Place slices of Havarti cheese on top of the ham, ensuring even coverage.
5. Assemble the Tops: Place the top halves of the slider buns over the cheese.
6. Make the Butter Mixture: In a bowl, mix the melted butter, Dijon mustard, garlic powder, onion powder, fresh parsley (if using), salt, and pepper.
7. Brush the Mixture: Generously brush the butter mixture over the top of the slider buns.
8. Cover and Bake: Cover the dish with aluminum foil and bake for 15 minutes.
9. Remove the Foil: After 15 minutes, remove the foil and bake for an additional 5-7 minutes, or until the sliders are golden brown and the cheese has melted.
10. Serve Warm: Remove from the oven and let cool for a minute or two before serving.

These steps will guide you in making these incredible sliders easily and deliciously!