Pastéis de Nata, also known as Portuguese custard tarts, are a beloved Portuguese pastry. They 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 brown. Pastéis de Nata are typically dusted with powdered sugar and cinnamon before serving. They are best enjoyed warm with a cup of coffee or tea. These sweet treats are a must-try when visiting Portugal.