4 Tricks to Keep Parchment Paper Flat It’s one of the handiest kitchen materials out there. But when your hands are covered in batter and you’re about to drop a dollop on the pan, why does parchment insist on curling up? Try these tactics to scare it straight. By Heath Goldman Facebook Pinterest Twitter Print Mail Save 1 Photo by KarpenkovDenis/Getty Images Lightly grease the baking sheet with vegetable oil or butter, then press down the corners of the paper until they stick. 2 Crumple the sheet, then smooth it out. 3 Place a plain magnet in each corner. (Make sure that the magnets have no paint or glue, which could burn.) 4 Cut sheets ahead of time and store them stacked in a baking sheet, with another baking sheet on top.