Question: is parchment paper necessary for brownies?
Answer: Spread it out to line a sheet pan, or fold and crimp it to fit cake pans or loaf pans. The non-stick kind is best – it's coated with silicone, like parchment paper – but if you don't have it, don't worry. Lots of cookie recipes call for an ungreased pan, so they don't spread too much, and foil works perfectly for that.