I'm not vegan so I wouldn't even know where to begin. Everyone's body is different and, for me, I just don't respond well without some sort of animal protein. Don't eat much beef but I do have chicken, pork, and fish on a regular basis. I am super picky about the source though. I wonder if all-natural, grass-fed, farm raised animals have less of an impact on the environment. Anyways...
Lots of good ideas in The Feed Zone cookbooks. Seem to recall a lot of the recipes being of the vegan sort. Could be wrong though.