This cake is kin to a steamed cake or an English Pudding, which is actually a cake. The middle of this cake will fall and get moist and gooey as it cools. If you can time this to serve warm for a large crowd, you will be a hit!. If you wish, you can substitute dates for the prunes. Use about 18 large dates. This cake is a heartwarming Holiday Treat. Happy Holidays!