Joy of Baking, was pretty good. So good you couldn't even taste the vegetables. So good that B even upgraded it to calling it a brownie.
That's probably the highest honor one can bestow on a zucchini bread.
Chocolate Chocolate Chip Zucchini Bread
1 1/2 cups shredded raw zucchini
1 cup all-purpose flour
1/2 cup unsweetened natural cocoa powder, sifted
3/4 teaspoon baking soda
1/4 teaspoon baking powder
1/4 teaspoon salt
1/4 teaspoon ground cinnamon
3/4 cup semi sweet or bittersweet chocolate chips
2 large eggs
1/2 cup vegetable oil
3/4 cup granulated white sugar
1 teaspoon pure vanilla extract
Preheat oven to 350 degrees F. Grease a loaf pan (makes 1 loaf)
Grate the zucchini, using a medium sized grater. Set aside.
In a large bowl combine the flour, cocoa powder, baking soda, baking powder, salt, and cinnamon. Fold in the chocolate chips, coating with the dry ingredients (prevents chips from sinking).
In another large bowl beat the eggs. Add the oil, sugar, and vanilla extract and beat until well blended. Fold in the grated zucchini and flour mixture, stirring just until combined. Pour batter into loaf pan and bake until the bread has risen and a toothpick inserted in the center comes out clean, about 55 to 60 minutes (do not overbake). Cool for about 10 minutes, run a knife around the edges, then remove the bread from the pan. It's best to cut when the bread has fully cooled. Enjoy!