01 - Preheat oven to 400°F and line a baking sheet with parchment paper to prevent sticking.
02 - Unroll thawed puff pastry onto a lightly floured work surface, ensuring it lies flat.
03 - Spread raspberry preserves evenly across pastry surface, maintaining a 1/2-inch border along all edges.
04 - Distribute fresh raspberries over preserves if using, pressing gently to adhere.
05 - Starting from one long edge, roll pastry tightly into a cylinder, sealing seam gently.
06 - Cut log into 8 equal slices using a sharp knife with gentle sawing motion.
07 - Place slices cut-side up on prepared baking sheet, spacing 2 inches apart.
08 - Brush tops with beaten egg using a pastry brush for golden browning.
09 - Bake for 18-20 minutes until rolls are puffed, deeply golden, and cooked through.
10 - Cool briefly on pan, then dust generously with powdered sugar before serving warm.