My baking sheets see a lot of use and even though I usually line them with either foil or parchment paper they still wind up pretty stained over the years. I've tried a variety of methods to remove the stains but this is the one I found that actually works and takes little to no effort on my part.
I only covered half with some fume free oven cleaner just to show a good before and after comparison. I let it sit for 2 hours for the cleaner to work.
After the two hours I rinsed the cleaner from the pan and wiped it with a sponge. There are still a few stains but overall it looks much better and it was a very easy process.
