Jésuite

A Jésuite is a triangular, flaky pastry filled with frangipane cream and topped with sliced almonds and powdered sugar. The pastry originated in France and the name refers to the triangular shape of a Jesuit's hat. A similarly-named Uruguayan dish is the jesuita, a baked ham and cheese sandwich with a puff pastry crust commonly eaten in parts of South America and considered a classic of Argentinian cuisine, where it is known as a fosforito. A similarly-named sweet pastry known in Portugal and Spain, the jesuíta, consists of puff pastry filled with custard. In Germany, Jesuitermützen are a custard-filled pastry traditionally cut into triangles.

Source: Wikipedia