Delicate, light puff pastry filled with sweet, cinnamon apples is sure to become your favorite food. These can be made for breakfast or dessert. They are elegant enough to impress your friends and family.
Preheat oven to 400°F and line two baking sheets with parchment paper. Take the puff pastry out of the freezer to defrost.
Combine diced apples, flour, brown sugar, sugar, cinnamon, nutmeg, and butter together in a medium size saucepan over medium heat. Cook for about 5-7 minutes to soften the apples. Set aside while you prepare the puff pastry.
Work with one sheet of puff pastry at a time. Cut the puff pastry into 9 equal squares. Roll out each piece of pastry into 3-4 inch squares and place on the prepared baking sheet. Repeat with the other puff pastry sheet.
Prepare the egg wash by beating the egg with a splash of water. Brush the egg wash on each pastry square. Place a spoonful of apple filling on the puff pastry squares. Fold over to make a triangle and press the edges closed with the tines of a fork.
Brush the tops of the pastries with the egg wash. Cut a few slits in the tops of each to let steam escape while baking. Sprinkle each pastry with the coarse sugar. Bake for 15-20 minutes or until lightly golden brown.