Custard Slice is a popular dessert made from layers of creamy custard sandwiched between crisp pastry. The custard filling is typically flavored with vanilla and thickened with eggs, giving it a rich and smooth texture. The dessert is often topped with a layer of icing or powdered sugar, adding a sweet finish. Custard Slice is enjoyed in various countries, with each region having its own variations and names, making it a beloved treat for many.