Flaky Pastry Cornets: A Delicious Treat for the Whole Family!

Step 1:
Begin by preheating your oven to 400°F (200°C).

Step 2:
In a large mixing bowl, whisk together the egg yolks, flour, and sugar until well combined. Stir in the vanilla extract.

Step 3:
Slowly pour the warm milk into the egg mixture, stirring constantly to prevent lumps from forming.

Step 4:
Transfer the mixture to a saucepan and cook over medium heat, stirring continuously, until it thickens to a custard-like consistency. This should take about 5-7 minutes. Once thickened, remove the custard from the heat and let it cool to room temperature.

Step 5:
While the custard is cooling, place the puff pastry sheet on a baking tray and bake in the preheated oven for 15-20 minutes, or until golden brown and puffed up. Let it cool completely.