Thaw puff pastry at room temperature about 45 minutes (according to package directions).

Preheat oven to 400*F.

On a lighly floured work surface, unfold one sheet of pastry. Cut the pastry in half, creating two rectangles. Place the dough on a baking sheet lined with parchment paper, or a baking sheet sprayed lightly with cooking spray.

In a small bowl, combine brown sugar, cinnamon, nutmeg, salt and corn starch.

Prepare apples by peeling and removing the core,then slice thinly.

Put apple slices to a large bowl, and squeeze the juice from 1/2 of a lemon onto apples. Stir to coat.

Then, add the contents of small cinnamon/sugar bowl to the apples. Stir to coat.

Arrange apple slices on puff pastry dough (like shingles), leaving about 1/4 inch of dough exposed on all sides.

Bake in preheated oven for 20 minutes. Cool slighly, and move to a serving plate.

Sprinkle with sifted powdered sugar, as desired.

Enjoy warm, or at room temperature. Serve with fresh whipped cream, or vanilla ice cream.