Gather up table salt, and a brown paper bag. The salt acts as a gentle abrasive, helping you to easily scrape up the rust without damaging the pan.
green scrubber sponge and comet cleanser,Brillo pads,SOS,steel wool & vinegar---rub a dub dub til they are shiny
Soak in coke
I have cleaned my baking sheets with vinegar and baking soda.
Scour with Brillo.