One of the most famous Belgian desserts, this sweet and spicy, tart-shaped filled pastry is prepared exclusively in the Flemish town of Lier. The delectable Liers vlaaike consists of thin, pâté brisée crust filled with a thick, creamy purée—the base is a typical, unsweetened shortbread pie crust, while the aromatic filling consists of coarse breadcrumbs, candy syrup, milk, and flour.