I have baked thousands of cookies the old fashion way.  But now I refuse to use any thing but parchment paper.  When baking cookies I will line my cookie sheets and after the first batch of cookies is finished, the cookies will literally slide off the pan.  Then place the second batch of cookies on the same sheets.  The cookies brown nicely and because they don't stick they keep their shape.  This product is considered a staple in my kitchen.  I don't have time to wash cookie sheets.

Also I use it for pizza pans,  great for keeping cheese for sticking to the pans!

The uses are unlimited and...