For this two-layered, spiced zucchini bread, cocoa and chocolate chips are mixed into half the batter for one of the layers. You could swirl the contrasting batters for a nifty wavy effect. September 24, 2022 by Collin Madden For this two-layered, spiced zucchini bread, cocoa and chocolate chips are mixed into half the batter for one of the layers. You could swirl the contrasting batters for a nifty wavy effect. Advertisement