By An Edible Mosaic
Pro tip
Slice horizontally through the slider rolls and place the bottom onto a foil-lined baking tray. Spread on an even layer of horseradish mayo, and top with the roast beef, and then the cheese.
Place the top half of the rolls on top, and then drizzle on the seasoned butter.
Cover with foil and bake for 25 minutes, removing the foil during the last 5 minutes.