Hoping someone out there can help me! When I agreed to do my brother's cupcake tower for his wedding, they originally wanted a round larger cake on the top tier to cut. They have now decided they want a square stand and a square top cake. Basically I am freaking out as I need a decent recipe for a 7 inch square madeira cake which will result in the cake being suitably deep if that makes sense? Also, I'm looking for a deep tin but the only ones I can find are 3 inches deep and this doesn't seem deep enough to me! I could well be wrong? If someone could provide their recipe and any tips on the right tin to use I would be more than grateful!! TIA