1. The Basics
Parchment paper, also called baking paper, is a heavy-duty, non-stick paper that is typically used for lining baking pans. It eliminates the need for extra oil and makes clean up a breeze. You can also use parchment paper to bake whole meals "en papillote," a French cooking method in which foods and seasonings are cooked together inside an envelope made with parchment.
Cut a large square piece of parchment paper and place on a baking dish or cookie sheet. Place protein and any vegetables plus seasonings onto the middle.
Join the two opposite edges and fold over the edge to create a pocket.
Fold the other two open edges on the opposite sides.
Fold and twist them up toward the food until the package feels secure.
Place baking dish or cookie sheet into oven and bake according to recipe instructions.