Preheat the oven to 400 degrees.

Position both pieces of puff pastry on top of one another on a parchment-lined baking sheet.

Trim the edges to form a Christmas tree shape from the square.

Remove the top layer and spread the Nutella onto the bottom layer. Place the other sheet back on top.

Use a knife to cut 1” strips up each side of the dough to make the tree branches.

Take the end of each strip and twist it several times.

In a small bowl, whisk together the egg and water. Brush the egg wash over the top of the pastry.

Sprinkle with the cinnamon/sugar mixture - if using.

Bake for 25-30 minutes or until golden brown.

Once baked, give it a dusting of confectioner’s sugar or use more cinnamon/sugar.