In my opinion vegetarians know what they're getting into when they decide to forgo eating meat. They should shut their whining, patronizing, superiority complex having, patchouli stinking, hippie mouths and enjoy the side dishes.
On a more serious note, my advice would be to offer a simple vegetarian alternative as not to alienate the meat eaters either. If baby wants meat at Christmas, baby GETS meat at Christmas.
Advice: Don't try and "mock" a meat dish with a meatless product (EX. godless Tofurkey). There are many hearty stews that you can make as a vegetarian alternative, such as curries and ratatouille that are easy and do most of their cooking in a crock pot. This allows you to have the meatless alternative, and not have to bust your ass for those freaks.