I readily admit baking is not my forte when it comes to cooking but a simple cake stumps me. Could someone tell my why every time I bake a cake it comes out dome shaped on top and not flat. Sure I invert after baking so I have a flat surface to ice but then there is a gap around the bottom of the cake. I also drop the pan lightly on the counter a few times after putting the mix in to let the air bubbles escape. I would love to bake a proper cake that is suitable to serve for company without it looking like a chocolate baseball stadium with the roof closed.