For big occasion birthday parties when I was little, we always got banana cake from Bensonhurst's Alba Pastry Shop, a classic Italian American bakery. It was described as being a vanilla sponge cake with chocolate Bavarian cream filling. The banana was layered thinly on top of the filling, and the exterior of the cake was covered in whipped cream with strawberries on top. I'd like to replicate the sponge and cream, but don't know where to begin. The sponge was super-light; are there different kinds of sponge cake? And should I go with a specific Bavarian cream recipe and whipped cream frosting (it wasn't straight whipped cream)? Any recipe suggestions appreciated!