If I make something I know one or both them do not like, I'll make them something else. If they usually like it but don't want it or suddenly don't like it, they can have cereal and have to get it themselves.
If I make something I know my kids won't eat (which is rare) I would make them something else. However, I just usually make food we all like.
If they refuse to eat what I make and it's normally something they'd eat, they go to bed without. That happens almost never.