The easy press-in crust is made with Speculoos cookies, a crunchy Dutch biscuit made with brown sugar and warm spices like cinnamon, nutmeg, and cloves—a perfect pairing for the spicy sweet pumpkin filling. The pies get their kick from grated fresh ginger, but it mellows under a pillowy dollop of whipped cream. Crystallized ginger sprinkled over top adds a sparkly holiday-worthy finish, but feel free to use some extra cookie crumbs instead.