If you haven't tried it you'll be amazed how well zucchini complements chocolate. It also makes the cupcakes a bit healthier!
I cut the oil down to 3/4 cup based on previous review. These cakes were moist without being heavy and had a great texture. The walnuts really made them special. Definitely need the chocolate icing - 12 Feb 2013
For some reason, mine ended up with a faint "fishy" aroma and taste. Not sure if it was the zucchini or the oil. I found these a bit too oily for my taste. - 15 May 2010