Caramel Banana Cake

So I have a bit of a thing for banana cake.But what's not to love? Moist cake, the creamy fragrance of banana and surprise crunchy nuggets of walnut. Bliss.This version takes banana cake to a new level of decadence with the addition of caramel icing. The icing isn't sickeningly sweet, but adds a slight toffee sweetness that matches well with the banana and walnut.With a healthy dollop of sour