01 - Preheat oven to 400°F. Line a baking tray with parchment paper to prevent sticking.
02 - Unroll the thawed puff pastry sheet on a lightly floured work surface.
03 - Spread raspberry preserves evenly across the pastry, maintaining a ½-inch border along all edges.
04 - Distribute fresh raspberries evenly over the preserves if using.
05 - Starting from a long side, roll the pastry sheet tightly into a uniform log.
06 - Slice the log into 8 equal pieces using a sharp knife.
07 - Place the slices cut side up on the prepared baking tray, spacing evenly.
08 - Brush the tops of each roll with beaten egg for golden coloring.
09 - Bake for 18-20 minutes until golden brown and fully puffed.
10 - Allow to cool slightly, then dust generously with powdered sugar before serving.