I use my cookie sheets all the time.  They are so pretty when they are brand new, but then they get caked up and brown and nasty looking.  So when I ran across a cleaning hack I thought I would try it out and see if it worked.

So apparently that Life Hack failed.

However, if you want to try it out, here's the instructions.

You'll need:

Baking Soda

Hydrogen Peroxide

Instructions:

Sprinkle baking soda onto your pan.  Then sprinkle peroxide over your baking soda.  Then add another layer of baking soda and wait a couple of hours.

After a few hours take a rag and wipe off the baking soda, you may have to scrub a little.

It should bring your brown yucky pan back to life.

For me, not so much

Good Luck.