I have a wonderful crabapple recipe posted (under "recipes" in the tool bar or under my avatar), and you could use other apples very easily. I used a mix of wild apples the last time, with great results. You don't want to use sweeter "eating apples", or at least not many, as you want the tarter "cooking apples".
Broken Leg Brewery
Giving beer a leg to stand on since 2006