Preheat oven to 375 degrees. In a small dish, mix together the sugar and cinnamon. Set aside.

Roll out puff pastry into a 12″x12″ square. Using a ruler, cut the puff pastry into four 3″ wide strips. Then cut each strip in half to create a 3″x6″ rectangle.

Divide the apple pie filling among one half of the rectangles. Using a knife cut four diagonal cuts into the remaining puff pastry rectangles. Top the apple filled puff pastry with the cut puff pastry and press the seams together. Use the tines of a fork to secure the seams. Brush the tops of the puff pastry apple pies with the egg wash, and sprinkle with the cinnamon sugar mixture.

Bake for 13-15 minutes, or until the pies are deep golden brown. Set aside on a wire rack to cool slightly before eating.