Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Unfold the puff pastry sheet on a lightly floured surface.
Cut out triangles with a pizza cutter or sharp knife — each will become a witch hat.
Roll each triangle from the wide end toward the tip to form a cone.
Pinch the edges to seal, then cut circles from excess dough to form brims for the hats.
Attach each circle underneath its cone to create the base of the hat.
If you wish, wrap and twist small strips of leftover dough around a pretzel rod to create broomstick handles.
Fill each cone with a small spoonful of Nutella (but avoid overfilling) and press to seal.
Brush all the hat formations with a beaten egg wash for color.
Bake for 12–15 minutes or until the pastry is puffed and golden brown.
Let them cool on a wire rack before serving.
Serve alongside a cup of warm cocoa or a spooky brew!