Two of the most talked about similarities were the covers, which each included a mom hiding carrots behind her back and similar recipes, including one that suggested putting avocado in chocolate pudding.
After Lapine's publisher contacted Seinfeld's publisher, Seinfeld's cover was changed so that the carrots were moved to a cutting board.
Both Jessica and her husband, comedian Jerry Seinfeld, strenuously denied any plagiarism. In November, when asked about the controversy during an appearance on The View, Jessica said:
“I can understand why she would have been frustrated. It must have been hard to see how quickly my book took off. I never saw her book, I never saw her recipes, nor, as a person, would I ever do something like I was accused of doing.”
Jerry also leaped to his wife's defense. He appeared on David Letterman's show, calling Lapine a "whacko" who claimed Jessica "stole my mushed up carrots." He went on to say that "She has three names and, you know, if you read history many of the three-named people do become assassins. Mark David Chapman, James Earl Ray."
Throughout the Seinfeld's public commentaries, Lapine remained silent, never issuing a public statement. That silence ended on Monday when Lapine sued both Jessica and Jerry Seinfeld in Manhattan federal court.
The suit, filed by cookbook author Missy Chase Lapine, claims Jessica Seinfeld copied her own book that explores how to sneak healthy foods into kids' diets. It also accuses the top comedian of embarking on a "slanderous attack" against Lapine on U.S. national television shows.
Take a look at Seinfeld's appearance on Letterman below and see what you think.
We all know by now that ideas aren't copyrighted. But did Jerry go too far?