Cook's Illustrated Magazine - January & February 2017, page 3
"Parchment Paper Origami"
"To tame the curl of a freshly cut sheet of parchment paper, Michael
Lafosse of Haverhill, Mass., folds evenly spaced, parallel creases in
both the short and long directions. When unfolded, the creased grid
helps to keep paper from rolling back into a cylinder, and it also works
as a guide for evenly spacing cookie dough. (The number of pleats may be
adjusted for more or fewer spots depending on what is being baked.)"
Louise in Northern california