i have two 3.5-4" springform cake pans that i'd like to use for a small layer cake. since i only have 2, i need a cake recipe that won't leave me with a lot of excess batter. should i look for a recipe that's suited for 1- 9" or 8" cake or can i assume that any recipe for a 2 layer 9" cake can be cut halved? any suggestions? looking for a chocolate cake.