Prepare the Pastry Base
Preheat your oven to 375°F (190°C).
Line a baking sheet with parchment paper.
On a lightly floured surface, roll out the puff pastry sheet to smooth any creases.
Make the Cookie Dough Filling
In a small bowl, mix chocolate chips, brown sugar, melted butter, and vanilla extract.
Stir until the mixture is evenly combined.
Assemble the Twists
Spread the cookie dough filling evenly over one half of the puff pastry.
Fold the other half of the pastry over the filling to enclose it.
Cut and Twist the Pastry
Use a sharp knife or pizza cutter to slice the folded pastry into 1-inch strips.
Twist each strip a few times to form spirals.
Place the twists on the prepared baking sheet, leaving space between them.
Egg Wash and Bake
Brush the twists with beaten egg for a golden finish.
Bake for 15-18 minutes or until puffed and golden brown.
Cool and Serve
Let the twists cool slightly before dusting with powdered sugar.
Serve warm for the best gooey chocolate experience, or enjoy at room temperature.