01 -
Preheat oven to 190°C. Line a baking sheet with parchment paper.
02 -
In a small bowl, combine diced apple, brown sugar, ground cinnamon, optional nutmeg, and melted butter until evenly coated.
03 -
Lightly flour a clean surface and unroll puff pastry sheet. Cut into 4 to 6 evenly sized rectangles.
04 -
Spoon apple mixture along one short edge of each pastry rectangle. Roll up tightly, sealing the edge with a little water, and place seam-side down on prepared baking sheet.
05 -
Brush each roll-up with beaten egg. Sprinkle with granulated sugar for added crispness.
06 -
Bake for 18 to 22 minutes, or until pastry is golden and crisp.
07 -
Transfer to a wire rack and allow to cool slightly before dusting with powdered sugar or drizzling with maple syrup, if desired.