About a month ago I busted out my old recipe for white bean vanilla cake. I decided to jazz it up and added a layer of mixed frozen berries. It turned out great - the sweet-sourness of the berries really goes well with the flavour of this vanilla cake.
Here's how: prepare the batter (see recipe here), then spread half of it in a 9" cake pan, put a layer of frozen or fresh berries on top, then spread the remaining batter on top of that. Bake as usual and enjoy!