Preheat oven to 450˚F. Wash potatoes and cut into cubes. Place cubes into a baking dish and sprinkle with salt and chopped fresh rosemary. Slice butter into 1/4 inch pieces and place on top of potatoes.
Bake for 15-20 minutes, stirring occasionally until potatoes are browned. Remove from oven and top with shredded BelGioioso Pepato and a sprig of fresh rosemary.