noun, feminine/taʁ.t(ə) ta.tɛ̃/plural: tartes Tatin
tarte Tatin (upside-down cake prepared with caramelized apples or other fruit)
Coined by French food writer Curnonsky as tarte des demoiselles Tatin (“cake of the Tatin girls”), named after the Tatin sisters who supposedly invented the cake by accident.