Creating Indulgent Chocolate Zucchini Bread with Sour Cream is simple if you follow these easy steps:

1. Preheat Your Oven: Begin by preheating your oven to 350°F (175°C). Grease and flour a 9×5-inch loaf pan to ensure easy removal.
2. Mix Dry Ingredients: In a large mixing bowl, whisk together the all-purpose flour, sugar, cocoa powder, baking soda, baking powder, and salt until well combined.
3. Combine Wet Ingredients: In a separate bowl, whisk together the eggs, sour cream, vanilla extract, and vegetable oil until smooth. Incorporate the grated zucchini into the wet mixture.
4. Combine Mixtures: Slowly add the wet mixture to the dry mixture, stirring gently until just combined. If using, fold in the chocolate chips at this stage.
5. Bake: Pour the batter evenly into the prepared loaf pan. Bake in the preheated oven for 50-55 minutes, or until a toothpick inserted in the center comes out clean. Allow the bread to cool in the pan for 15-20 minutes before transferring it to a wire rack to cool completely.

Following these steps will help you create a wonderful loaf of indulgent chocolate zucchini bread!