For Christmas Eve, I want to make a Scandinavian meal with some recipes I got from Epicurious. Ideally I'd make some kind of fish dish for the main entree but i've had some food allergies lately and have to skip that option. I don't eat meat other than fish/seafood, which is not an option right now. Is there anything I could substitute as the main course? We plan to make a beet salad, potatoes, maybe some red cabbage, and rice pudding for dessert. Thank you!