Here's a slightly different coffee cake which uses a sourdough starter (that must be prepared in advance). Well worth the effort!
This sourdough spiced coffee cake is heavenly. My kids love the fruit and nuts added. I have tried an the equally good coffee cake "Amish Friendship Cake" and do not find them to be the same. - 21 Feb 2001 (Review from Allrecipes USA and Canada)
I cut the recipe in half, and it didn't look like enough batter for 2 square pans. I put it all in one square pan but then had to cook for double the stated time, so maybe I should have done 2 I left out all the nuts due to an allergy in the household. For sourdough starter I used some of my Amish Friendship Starter, which has more sugar than regular sourdough. Since I used a sweeter starter I did not use the optional honey. Out of the bowl, the glaze was nothing special, but when I sat down and had a piece of this coffee cake everything went together and it tasted wonderful! UPDATE: Made this again, and this time I split it between two pans. Taste was actually better! I still had to cook 5 minutes longer than recipe states. I highly recommend this recipe, it melts in your mouth! - 15 Nov 2009 (Review from Allrecipes USA and Canada)
I made recipe as directed, but baked in a single, nonstick, 9x13. deep cake pan. The cook time increased to thirty minutes. The glaze did not look impressive at first, however as someone else stated, it combined with the rest of the cake very well. Overall, I was pleased; it resembles the Herman coffee cake my Memaw used to make. - 24 Oct 2010 (Review from Allrecipes USA and Canada)