Apple Puff Pastry Pastries

This recipe may also be found at Cookie Recipe in 5 Minutes; instructions:
Getting the Apples Ready (two minutes):
Preheat your oven to 200 degrees Celsius (400 degrees Fahrenheit).Apples should be washed and cored. Peel them if you like, and then slice them very thinly so that they cook evenly.
Apples should be sautéed for four minutes:
Melt the butter in a saucepan that is set over a medium heat. While the sugar and sliced apples are simmering for two to three minutes, the apples should get somewhat softer.
simmer for one more minute after sprinkling with cinnamon and continuing to simmer.
Assemble and personalize (three minutes):
Unfold the sheet of puff pastry that has been thawed and cut it into squares or any other shapes that you choose.
A dollop of the apple filling should be placed in the middle of each piece of dough.
Glaze and bake for fifteen to twenty minutes:
The egg wash is made by combining the egg yolk and milk in a small dish and whisking them together. Apply this mixture to the edges of the pieces of pastry and brush them with it.
Once the dough squares have been folded into triangles or other shapes, use a fork to seal the edges of the triangles. Egg wash should be used to coat the tops, and then sliced almonds should be sprinkled on top.
In a baking sheet that has been prepared with parchment paper, transfer the mixture and bake it for fifteen to twenty minutes, or until it is golden brown and puffed up.
Serve, and take pleasure in:
Allow the pastries to gently cool down before serving them. Powdered sugar may be sprinkled on top if desired.