Lay prosciutto slices onto a board, slightly overlapping on the long side. Place sage leaves along the centre of the prosciutto, and top with Philly block.
Enclose in the prosciutto, and turn up the other way
Place Philly block onto a lined oven tray and bake at 200°C for 10-12 minutes, until prosciutto is crispy. Serve on a platter with crusty bread and apple slices