This no-bake dessert features alternating layers of savory pistachio-studded semolina and a cooked cream called _kashta,_ set into a springform cake pan and chilled in the refrigerator overnight. If you are feeding a crowd, double the recipe and forgo the cake shape for a looser presentation: Spread all the semolina mixture on a large platter, spoon the kashta over it, and garnish with the nuts and powdered sugar; then spoon it into dessert bowls. There is no English translation for kashta, pronounced "ahshta," but it is often described as the Arab equivalent of clotted cream. This fragrant cake filling is also delicious as a breakfast treat, drizzled with honey or swabbed on a piece of toast.