Cut the apples into small cubes and cook them in a small pan with a little water until soft. Add the blackberries to the apples and sweeten with three or four tablespoons of berry jam or honey, then sieve the mixture.
Cut your sheet of chilled filo pastry into six squares. Add a spoonful of the berry mixture into the centre of each square and fold the corners of the pastry into the centre to form a pie shape.
When you’ve folded up six little parcels, sprinkle them with brown sugar, space them out evenly on a buttered baking sheet and pop them in the oven for half an hour, or until golden.