Pastéis de Nata, also known as Portuguese custard tarts, are a beloved Portuguese pastry. These delicious tarts consist of a flaky pastry shell filled with a creamy custard made from eggs, sugar, milk, and vanilla. The tarts are baked until the custard is set and the pastry is golden and caramelized. Pastéis de Nata are best enjoyed warm, with a sprinkle of cinnamon or powdered sugar on top. They are a popular treat for breakfast or as a sweet snack throughout the day.