Traditional Portuguese Pastéis de Nata

Method

1. Preheat oven to 200°C (400°F).
2. In a saucepan, heat milk, sugar, flour, and egg yolks over medium heat, stirring constantly until thickened.
3. Remove from heat and stir in vanilla extract.
4. Roll out puff pastry and cut into 6 circles.
5. Place in a greased muffin tin and fill each with custard.
6. Brush with egg wash and sprinkle with cinnamon sugar.
7. Bake for 15-20 minutes until golden brown.
8. Let cool slightly before serving.