DH gave me a great set of baking pans for Christmas. The springform pan came with a second bottom. It's wavy--sort of like the bottom of a bundt pan. I've never seen such a thing before and am trying to figure out what it could be used for. Any ideas?
I've seen springform pans with fancy patterned bottoms too. I've only ever used mine for cheesecake, although I hear they're great for deep dish pizza too, so I never invert anything I make in them. I suppose there's no reason you couldn't bake a regular cake in one though.