I usually make this to imitate the traditional Danish Christmas food:
Boil potatoes and carrots and use the stock to make a brown sauce: https://gastrofun.dk/opskrift/vegansk-brun-sovs/ (use Google Translate or similar)
You would have to make some kind of meat substitute. You can make a nutty pie or maybe some Seitan-based meat.
Serve with salty crisps (to dip into the brown sauce), pickled cucumber salad and red kale salad (either raw with oranges or cooked in vinegar and sugar. Maybe look up a recipe).
Also I tend to make some brown potatoes. Heat sugar in a pan, add lots of vegan butter and toss and turn the cooked potatoes into the mix.
Merry Christmas ;)
Fuck yes! I have lasagna in my oven, but it is not nearly as nice as yours.