My wife is veggie and, for her, Christmas dinner is everything except the turkey and pigs in blankets. Given that there are about 18 different things on the plate already, a lack of turkey really isn't a big deal.
I don't have the parsnips but I don't expect an entirely different dish or alternative to parsnips to be prepared. Not sure why we treat the meat part so different.
I have nothing extra to add... Mushroom Wellington (Greens in Didsbury turned me on to this) or Veggie Haggis. When done with all the trimmings of a roast, I never feel like something is missing if one of those is in the mix (never tried having both together, but now I've thought about it, I will this year)... and I'm definitely not veggie.
We did a lasagne with lentil 'mince' and veg
Get it ready ahead of time, then just stick in the oven
Well, my youngest and my darling wife vetoed the Purely vegetarian Christmas Dinner Option, so we still ended up with a roast turkey.
But I managed to sneak in a cheeky nut roast, which was pretty decent, although I think only myself and my eldest son ate any of it.
No particular recipe, just chopped nuts, lightly heated first, and then the usual suspects (onion, tomato, carrot, courgette, dried mushroom, etc). I think I put some MSG in as well, but can't for sure remember.
Half of it ended up in the fridge, until my dog saw the opportunity and helped himself to some of it (labrador; if it can be eaten it will be eaten, consequences be damned).
The rest turned into a really rather good vegetarian shepherd's pie last night. The mash potato used a few tips from the thread the other day - potatoes cut up small and then the water driven off after being drained with a bit more heat. Add butter and cream. Creamy and delicious.
Well done. At least you tried and glad the labrador joined in.