Disturbing AI-generated videos have gone viral on TikTok, showing convicted triple-killer Erin Patterson preparing her deadly beef Wellington dish.

Erin Patterson, 50, was found guilty of murdering three relatives and attempting to murder a fourth on Monday after she laced their meal with death cap mushrooms.

Patterson's father-in-law and mother-in-law Don and Gail Patterson and Gail's sister Heather Wilkinson died following the lunch at her Leongatha home in south-east Victoria on July 29, 2023.

Heather's husband, Pastor Ian Wilkinson, was the sole survivor of the deadly meal.

The high-profile case drew global attention and developed a cult following online, spawning memes and satirical content.