Reese’s Thanksgiving Pie, Its Largest Peanut Butter Cup Ever, Sells Out in Hours Posted byAmanda Breen November 17, 2021 Leave a comment on Reese’s Thanksgiving Pie, Its Largest Peanut Butter Cup Ever, Sells Out in Hours Social-media users had a lot to say, with some offering to taste test and others noting the pie’s 7,680 calorie count.