01 - Set oven to 400°F and line a baking tray with parchment paper.
02 - Unroll puff pastry sheet and cut into 8 equal squares.
03 - Place a piece of Brie cheese in the center of each pastry square, then top each with 1 to 2 teaspoons of cranberry sauce.
04 - Sprinkle chopped herbs and nuts over each if using.
05 - Fold corners of each square toward the center, pinching edges to seal and form a small parcel.
06 - Place parcels seam-side down on prepared tray and brush tops with beaten egg.
07 - Bake for 18 to 20 minutes or until pastry is golden and puffed.
08 - Allow to cool for 5 minutes before serving warm.