I have been asked to make a 3-tier cake with a sour cream poundcake layer, red velvet layer and a yellow cake layer. All will be iced and filled with buttercream. I am guessing that the poundcake layer will be heavier?? Do I have to keep it on the bottom? Also, I've only made my poundcake recipe in a tube pan. What kind of pan should I use? Do I make it in layers or just one thick layer? THANKS for any help!

I would put the pound cake on the bottom but it probably doesn't matter as long as your support system is solid. The batter will bake fine in a normal pan and you can torte it as you would anything else. In my opinion of course.

I agree, I would probably put the pound cake on the bottom but as Mfattore wrote as long as you have a good support system it shouldn't matter. I have baked my pound cake in several different pans, rounds, and squares with no problem. Good luck.