Hi Everyone! I had a customer who just bought a rectangle stone from me last month. She called me yesterday and asked if she could bake a cake in it and pop it out like you would in the cake pans? I've never tried it so I didn't know. To be honest, I just recieved my stone and I haven't really had a chance to use it at all yet!! I told her that I wasn't for sure because I never tried it and that I would ask around and call her when I found some answers. Does anyone here know?? Thanks in advance for any advice!