Definition from Wiktionary, the free dictionary
tarte Tatin (plural tartes Tatin)
- A type of upside-down cake in which the fruit, usually apples, is caramelized in butter and sugar.
upside-down cake prepared with caramelized apples
Coined by food writer Curnonsky as tarte des demoiselles Tatin (“Misses Tatin's cake”), named after the Tatin sisters who supposedly invented the cake by accident.