Let your puff pastry thaw on your counter for about 40 minutes.
Preheat your oven to 400 degrees.
Combine your sugar, nutmeg, cinnamon and vanilla in a medium sized bowl.
Add your peaches to the sugar mixture and coat them in mixture.
Cut your puff pastry into 9 square pieces.
Place about 4 slices of peach on each pastry piece.
Use a pastry brush to spread additional mixture on the corners of the pastry.
Bake in oven for about 20-25 minutes until pastry turns golden brown.