Prune Coffee Cake

A friend of the family makes a delicious prune cake, of which I've been promised the recipe for the last 20something years. My attempts to recreate it started with Susanne's Spice cake from the Vegetarian Pleasures cookbook. I keep making it, adding/deleting ingredients and in this version adding espresso. Topping it with powdered sugar is sweet enough for me, but a powdered sugar glaze would better suit someone with a real sweet tooth. Also, the espresso gives it a strong coffee flavor, but you could use coffee for a less intense effect. - nannydeb