Directions
- Preheat the oven to 375 ° F (190 ° C).
- On a floured work surface, roll out the puff pastry into a 12-inch (30 cm) square.
- Brush the entire surface of the dough with pesto. Cut the dough into strips about 2 cm (¾ inch) wide.
- Gently fold each strip back on itself to form a tree. Prick each tree on a wooden skewer.
- Place the trees on a baking sheet lined with parchment paper.
- In a bowl, beat the egg yolk with a little water. Brush the trees with the beaten egg yolk.
- Bake for 15 to 20 minutes, until the trees are golden.