Dutch bread toppings tin. - Muisjes (Dutch pronunciation: [ˈmœyʃəs]; translated little mice) are a traditional Dutch sandwich topping. While customary on bread, their most typical use is on beschuit, or rusk. Muisjes are made of aniseeds with a sugared and colored outer layer. Muisjes, meaning "little mice" in Dutch, are named because the anise seed sprinkles are shaped like little mice, with the stem of the anise seed resembling a tail. They are made by one company only, De Ruijter.