Sugar! Artificial flavoring! A toaster! Everything you look for in a movie! Jerry Seinfeld & Melissa McCarthy Star In Netflix's 'Unfrosted' Trailer Jerry Seinfeld and Melissa McCarthy are starring in a new Netflix movie called Unfrosted, which is based on the story of Pop-Tarts. The synopsis stated, "Michigan, 1963. Kellogg’s and Post, sworn cereal rivals, race to create a pastry that will change the face of breakfast forever. A tale of ambition, betrayal, sugar, and menacing milkmen, Unfrosted stars writer-director Jerry Seinfeld." Unfrosted will also star Amy Schumer, Jim Gaffigan, Hugh Grant, and more, and the movie will be released on Netflix on May 3rd.