Prep Ahead
Toast both the top and bottom slabs of rolls. Fully layer the sliders but don't add the poppy seed butter (refrigerate butter separate). Tightly cover with foil and refrigerate for up to 24 hours. When ready to enjoy, let the sliders sit at room temperature for 15 minutes. Meanwhile, microwave the refrigerated poppy seed butter. Pour the butter over top and bake per recipe instructions, adding an additional 5-10 minutes to the bake time as needed for hot and melty cheese.