Preheat oven to 375°F and grease a 9x13 pan with cooking spray.
Remove slider buns from their package and slice horizontally, so you have a top layer and a bottom layer.
1 package Hawaiian roll slider buns
Place the bottom layer in the prepared pan.
Add the cheddar cheese in an even layer.
6 slices cheddar cheese
Next, add the ham.
3/4 pound sliced ham
And then the layer of provolone cheese.
6 slices provolone cheese
Then, top the sliders with the bun tops and set aside.
Make the sauce by combining the melted butter, parmesan, red pepper, garlic, onion powder and parsley. Brush it over the sliders.
1/4 cup butter, 2 tablespoons grated parmesan cheese, 1/4 teaspoon crushed red pepper flakes, 1/4 teaspoon garlic powder, 1/4 teaspoon onion powder, 1/2 teaspoon parsley
Cover the sliders with foil and bake for 20 minutes.
Remove the foil and bake an additional 3-5 minutes or until heated through and golden brown on top.