A tiny, banana-sweetened, yogurt-frosted, whole grain layer cake that's perfect for eating with baby-sized fingers.
To make this cake completely dairy-free/vegan for your baby, use 1/2 cup canned coconut cream (or the thick cream on top of a can of chilled coconut milk) in place of the yogurt in the frosting.
If your baby is allergic to wheat, oat flour is a great substitute for the whole wheat. The cake layers will be slightly more delicate, so just be careful as you remove them from the pan.