Preheat the oven to 400F and line a baking sheet with parchment.

Spread pesto over the puff pastry and sprinkle with Parmesan.

Fold the pastry in half, then cut into long strips.

Twist each strip a few times and lay on the baking sheet.

Brush with beaten egg and bake 12-15 minutes until puffed and golden.

Cool slightly before serving.