Caramel-Filled Banana Cupcakes with Penuche Frosting

I think it’s fair to say that housewives went a little “bananas” for banana cake during the first half of the twentieth century. The recipe revamped here is from 20 Wonderful Cakes made by the new Kraft Oil Method (1955). I increased the amount of bananas and frosted these with penuche, a brown sugar–based frosting with an almost caramel-like flavor. And the salty caramel filling? Well, not only does salty caramel rank almost with bacon on the trendy scale these days, but it beautifu