On the lightly floured surface, unfold the puff pastry sheet.
If desired, trim the edges to make a neater square.
Brush the edges of the puff pastry with the egg wash.

Add filling:
Spread the apricot jam evenly over the center of the puff pastry, leaving a 1-inch border around the edges.
Arrange the apple slices in an overlapping pattern over the jam.
Sprinkle with the melted butter.
Bake: Bake for 20-25 minutes, or until the pastry is golden brown and the apples are tender.
Cool and serve: Let cool slightly before serving.
Tips and Variations:

For a richer flavor: Add a pinch of nutmeg or cardamom to the apple mixture.
For a sweeter tart: Increase the amount of sugar or add a drizzle of honey on top.
For a savory twist: Replace the apricot jam with Dijon mustard and top with crumbled cheese.
Garnish: Sprinkle with powdered sugar or garnish with a dollop of whipped cream before serving.
Enjoy your delicious and easy-to-make Apple Cinnamon Puff Pastry!