Summer birthday cake

We've celebrated several birthdays around here in the past little while, and our favourite zucchini chocolate cake always makes an appearance for these occasions.  We usually add 2 eggs to the recipe for a lighter cake that rises well, but this time we modified it with banana in place of eggs for a vegan version.  We've made it with gluten free flour in place of wheat for a GF version, and used chocolate-avocado-maple icing for a sugar-free version.  Any way you make this cake it always turns out perfectly, and uses up a good load of zucchini which is in abundance at this time.