Preheat oven to 200C or 180C fan-forced and line 2 baking trays with non-stick baking paper.
Combine pie apples, sultanas, brown sugar and cinnamon in a bowl.
Use a saucer as a guide to cut 4 x 11cm rounds from each sheet of pastry.
Put about 2 tablespoons of apple mixture onto each pastry round and fold over.
Press edges with the back of a fork to seal.
Place turnovers onto the prepared trays.
Brush them lightly with beaten egg.
Use a fork to prick a few holes into the pastry.
Bake for 15-20 mins, until golden brown.
Dust turnovers with icing sugar and serve warm at room temperature.
