Reddit mentions of Vive le Vegan!: Simple, Delectable Recipes for the Everyday Vegan Family

Make sure your oven temperature is accurate (it usually isn't) Don't trust the temperature the oven claims it is, but get an oven thermometer and go by that instead.

Also, get Vive Le Vegan and use the brownie recipe in there; makes the best brownies I've ever had.

My son's long-standing favorite is beans and rice. Canned beans are very good for you, easy to use, contain iron, protein, and fiber. We also sub in other grains for the rice sometimes (eg, quinoa, home-made mac-and-cheez, etc). You might want to go for the low-sodium beans or cooke the beans yourselves as some canned beans can be sodium rich.

He loves all of the fake cheese/meat stuff, but we try to not go overboard with these. He also loves tofu, so we cook tofu (scrambled, grilled or baked for tofu tacos, etc).

I can highly recommend Dreena Burton's cookbooks which focus on family-friendly vegan cooking (my son loves the super easy french toast recipe made with whole wheat bread).

Also, snacks on the go were an issue for us before we found that he loves single serving apple sauces (watch out for added sugar if you care about that), dried fruits (mango is his current favorite), peanut butter with sliced apples, and Pirate's Booty.