Here’s my rusty pan. It's clearly seen too many cheesecakes. I didn't think I could bake with it again.

All I used was a bottle of coke and a scrunched up piece of tinfoil.
Step 2: Pour the Coke

I poured the coke all over my pan. There is some chemical reaction that quickly gets the rust off. This is mostly surface rust, so I could wipe it off after a few minutes. For deeper rust you have to let it sit for longer.
Step 3: Scrub with Foil

The coke loosens all the rust, and the foil takes it off. With just a few scrubs all the rust comes off.
Step 4: Rinse Your Pan

Just rinse the coke and rust off your pan. My hands actually got kinda orange while doing this. I'm not sure why...

Tada! All clean. Instant rust remover.

Look at the difference! Now I can bake again!