Parchment paper is definitely a kitchen essential. These silicone-coated sheets are most often used to line baking pans. But if you happen to run out, is it the end of the world (or at least your cookie baking)? Not at all. There are a few viable options.
Grease the Baking Sheet
The easiest way to substitute for parchment paper is to grease the baking sheet with shortening or cooking spray. Spray the entire surface since cookies tend to spread out during baking.
Wax paper is an okay substitute, but it sticks to gooey food more readily and has a tendency to smoke in the oven. Grease wax paper before baking for better results. Avoid using it with very high temperatures and long baking times.
Silicone baking mats also work well as substitutes for parchment paper. Plus, they’re reusable. Definitely worth the investment.
Aluminum foil, especially the quick-release kind that’s coated in silicone, works well and crisps the baked goods. Quick-release aluminum foil works well for foods cooked en papillote (in a pocket).