When having a large dinner and you have one person who is a vegetarian, is it necessary to make a special dish for that person to replace what ever meat dish(es) you are serving?
If there are ample vegetable sides, I don’t see a reason to make a special vegetarian dish. I might make one of the vegetable dishes a little more substantial – like a broccoli and cheese bake – but it doesn’t have to scream vegetarian eaters only.