Vegans and those who cook for them tend to assume that vegan cuisine has to be new, weird and non-traditional. Sometimes this expectation is also an excuse to use off-season ingredients. I'm a firm believer in seasonal cooking, and I see no reason why holiday dishes should be any different, particularly if you're looking for traditional flavors. The roasted fruits and veggies in this dish are not only seasonal and nutritious, but tasty enough to appeal to any hungry traditionalist, vegan and omnivore alike.