On a lightly floured work surface, shape the dough into a cylinder and cut into six discs. Roll out to about 3-mm (1/8-inch) thick, 14-cm (5 1/2-inch) circles. Cover the centre of each pastry with 15 ml (1 tablespoon) of chestnut purée or applesauce to about 2.5-cm (1-inch) of the border. Cover the purée with apples, making a centre of overlapping slices to form a rosette. Fold the edges of the dough inward, forming a crease.