Tomato Cakes with Balsamic Frosting

Tomato soup cakes have been around since the turn of the century as a thrifty way of making something sweet in the times of rationing. Originally dubbed “mystery cake” as a way of concealing the secret ingredient, perhaps acknowledging that unwitting diners might be scared off by the novel concept, the processed tomato product was merely an extender, filling in the bulk of the cake without using eggs, only to be covered up in heavy gingerbread-like spices. You’d never know there was ever a