What's your tried and true method of reviving a rusty cast-iron pan?

Yes, I know I can google it and find some mommy blogger who specializes in trash to treasure.

I want firsthand knowledge from my trusted sources. ^_

I cleaned out the shed today and found my old cast-iron griddle pan. I’d like to get it back into good shape, but it’s been exposed to the Florida outdoors for a couple of years now, and it’s quite rusty.

Do you know any tips or tricks on how to get this thing back into sunny-side-up-eggs shape?