I'm trying to use up a not v nice panettone (get me, eh?), and thought I'd make a variant of bread & butter pudding with it. But all the recipes I've found say to cook it in a bain marie. We currently only have a small combination microwave/fan oven, which I can't fit a roasting tin in. So can I skip the bain marie cooking bit, and just bung my b&b pudding straight in the oven, or will disaster ensue?