Pre-heat the oven to 200c.

Peel, core and dice the apples into small pieces and mix with the cinnamon, sugar, and raisins.

Cut the puff pastry sheet into six equal rectangles and distribute the apple mixture evenly.

Fold the puff pastry diagonally to make a triangle and seal the edges, pressing firmly with a fork.

Brush the pastry with a beaten egg and sprinkle with some sugar.

Put in the oven until golden brown (c. 15 minutes)