"This classic, unbaked 'cake' is for people who like dense, assertive chocolate desserts. It's super-easy--requiring only moments to combine the chestnut, melted chocolate, and rum--and extremely rich ...

Grease and line a rectangle ... Spoon cake mixture into cake tin and bake for about 35 minutes or until an inserted skewer comes out clean. Allow to cool before icing. Melt the chocolate in ...