This isn’t just zucchini bread. This is the best chocolate cake you've ever eaten disguised as zucchini bread. Rich brown butter with a little espresso and gooey chocolate take this loaf from nostalgic to irresistible. And yes, there’s zucchini in there. You’ll barely know it’s there, but your loaf’s moisture and tender crumb will thank you. If you want to have your kids begging for seconds, just whip up this Sourdough Brown Butter Chocolate Zucchini Bread!