Crab makes an excellent risotto, I choose not to use the brown meat but many recipes include it so if you like of course include it. Traditionaly parmesan isn't added to seafood based risotto but I love the flavour of course don't over do it, so if you prefer simply leave it out.
Prep: 20-30 minutes plus 3 hours rising
Cook: 30-40 minutes
Prep: 15 minutes
Cook: 40 minutes
Prep: 10 minutes
Cook: 30 minutes