- Lightly coat a 9×13 inch dish with cooking spray. 
- Cut the slider buns in half like a sandwich (all together, do not break into individual sliders yet). 
- Place the bottom layer into the prepared dish. 
- Add half of the cheese on top. 
- Follow with a layer of ham, then the remaining cheese. 
- In a small microwave-safe bowl, melt the butter. 
- Whisk in brown sugar, dijon, poppy seeds, onion powder, garlic powder, Worcestershire, salt & pepper. 
- Brush this mixture over the tops of the rolls. 
- Pour any remaining mixture to coat thoroughly. 
- Cover with aluminum foil. 
- Bake at 350 degrees for about 20 minutes. 
- Remove the foil & continue baking for an additional 10 minutes. 
- Remove & serve immediately.