A custard tart is a classic dessert consisting of a pastry crust filled with a smooth custard made from eggs, milk, and sugar. The filling is typically flavored with vanilla, nutmeg, or lemon zest, giving it a rich and creamy texture. This tart is often baked until the custard is set and the top is lightly golden. Custard tarts are popular in various cuisines around the world, with notable variations such as the Portuguese pastel de nata and the British egg custard tart. They are commonly served chilled or at room temperature, making them a delightful treat for any occasion.