This is the first time Edward Norton has reprised a role from a previous picture as he famously refuses to do sequels.
When Julius stores the human teeth in the green cases during Burning Man, the cases say "Stephen Glandzberg DDS". Stephen Glandzberg is the name of Seth and Evan's classmate who eats dessert by himself in "Superbad".
It's been eight years After The First Film Released the food meet their human creators in 'the real world' Offscreen.
Sausage Party: Foodtopia Is a direct sequel to the original Sausage Party film.
Michael Cera and Will Forte also appeared in Scott Pilgrim Takes Off (2023), Where Cera voiced the titular Scott Pilgrim and Forte played Scott's future self.