Pennsylvania Dutch Cake

The Kresge clan has a traditional Christmas morning dish called "Dutch Cake." The Kresges, Kunkles, and other families from the Pennsylvania Dutch country make a sweet potato yeast coffee bread cake. The original recipe was a 3 or 4 hour affair with much fiddling. Fortunately, taking a queue from Kim Feiker I've been tweaking the recipe for a standard 2 lb bread maker!