Stuffed Crabs - Recipe and crab shell prep

Last night I cleaned 3 dozen crabs and put them up for gumbo.
I saved a dozen or so shells to stuff for thanksgiving week for my sister who is coming down from Colorado. She misses seafood greatly so I decided to make some stuffed crabs to go along with the seafood gumbo.

I need a good guide/recipe for the stuffing.
Also, if anyone could give some advice on prepping the shells to be cooked in, it would be greatly appreciated.