Police said the unmarked delivery truck had stopped for fuel on the outskirts of Sydney when a 28-year-old woman allegedly hopped inside and made off with the freshly baked booty.
Detectives followed a trail of crumbs to a suburban carpark, where they found the abandoned vehicle more than a week later.
The woman was arrested on Thursday, and police said her just desserts was to be charged with taking a truck without its owner's consent.
Police said the doughnuts were "destroyed".
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© Agence France-Presse