Pre-heat oven to 375F/190C. Line a baking sheet with parchment paper.
In a large bowl combine the apples, brown sugar, cinnamon and lemon juice.
Roll out the pastry to a rectangle, cut into 6 squares, Divide the apple mixture in the centre of each square. Then fold diagonally to form a rectangle. Seal the edges, make 2 small slits on the top of each rectangle.. Place on the baking sheet, brush with milk, sprinkle with demerara or turbinado sugar. Bake for 18-20 minutes. Transfer to a wire rack to cool. Enjoy!
Notes
How to store
Store: Leftover baked apple hand pies can be stored in an airtight container at room temperature for 2 days. For longer storage, transfer to the refrigerator up to 4 days and bring to room temperature before serving. Freeze: Cool completely then wrap in plastic wrap then foil and store in the freeze for up to 3 months. Thaw and then reheat in the oven for 5-10 minutes.