This is a French apple cake and it's the easiest cake I've ever made. Really. No mixer required. This is also about half apple, half cake, so it's kind of healthy. Sort of. Something about this dessert is so comforting, so simple - and yet so decadent. The interior is like a custard, chock full of apples and laced with rum and vanilla. Sure, it looks like dessert, but just between you and me....I ate most of it for breakfast the next day.