Preheat oven to 400°, or according to puff pastry package.

Spread parchment paper on a cookie sheet, and thaw the puff pastry, then unfold it.

Place chocolate bar in the middle of puff pastry.

Cut the pastry for your braid (see image above for detail).

Fold the braid, starting with the end pieces, then alternate sides when folding each piece over the chocolate bar.

Brush with egg wash (1 egg + splash of water).

Bake for about 15-20 minutes, or until golden brown.

Let cool for about 10 minutes, then sprinkle with powdered sugar.

Serve warm and gooey!