Using parchment paper to bake the cookies is easy, safe (and food-grade!), and is my favorite cookie-baking trick.
Parchment paper allows you to be more precise in baking cookies, because you can remove them all from the pan at the same moment. Plus, you can make more cookies faster, which is never a bad thing.
A note: Some people use brown paper, but parchment has a longer life, so I prefer it over paper.
Step 1: What to do
Step 2: How is this different from the way I normally bake cookies?
For people like me, being able to remove all the cookies at once saves me a lot of frustration, probably because of simply knowing that all the cookies will be the same (There's some of my geek-ish OCD tendencies showing through again, oh my.).
Not to mention, sliding them all off at once saves a lot of time, which is definitely good when you're trying to make hundreds of cookies at a time.