Newbie here. I'm making my nephew's first birthday cake-- two layers, 12x18x2 pan. I've been reading up on heating cores, and it seems like people recommend using more than one for this size. Problem is, I have two flower nails, and they are different sizes. Should I still use both of them? Or just use one in the center?
Also: I was going to butter/parchment/butter the bottom of the pan-- is there some other way I'm supposed to prep the pan before baking?
I never use heating cores on 12x18 cakes; but if you want to, I think one is enough. If you wanted to use two, it doesn't matter if your flower nails are different sizes.
I use wax paper at the bottom of my pans, I don't butter them or anything extra. I do, however, use baking strips around the outside of the pan. (thick cotton material soaked in cold water works fine.) Attach the strip with binder clips near the corners of the pan.
I have been making cakes since 1982.
I use three flower nails, right down the middle - length wise.