The Belgian Bun, or the native Chelsea Bun (similar, but not fondant-iced) set into a loaf: a visual pun of 'bun in the oven' or 'in the pudding club'. Baba, a rum-soaked unleavened sweetened bread also has raisins (dried fruit absorbs alcohol and releases it slowly); originally Polish, whereas the Belgian bun seems to be of unknown origin.  The word 'Baba' is also used to refer to baby or bunny.