Cinnamon-Topped Whole Wheat Zucchini Bread This recipe works great with any type of summer squash, as well as zucchini. The more cinnamon applesauce you substitute for oil, the moister the bread will be. However, it seems that using applesauce increases the cooking time slightly. I think brown sugar is great instead of white sugar, and using a little extra helps give more flavor. The bread can be made with or without the topping, which I found to be difficult using 'cold butter'. That may just be due to the type of butter I use though. Also, the '15 minute prep time' certainly does not include the time it take to shred the zucchini/squash! :) Overall, this is a really rood recipe and I've made it several times.