Traditional Portuguese Tarte de Nata

Method

1. In a food processor, combine butter, icing sugar, egg, and vanilla. Pulse until crumbly.
2. Add flour and salt, then pulse until a dough forms. Wrap in plastic and chill for 30 minutes.
3. In a bowl, whisk together milk, eggs, sugar, cinnamon, and nutmeg.
4. Preheat oven to 200°C (390°F). Roll out the dough and cut into circles to line a tart tin.
5. Pour the custard mixture into the tart shells.
6. Bake for 15-20 minutes until the custard is set and golden.