Chocolate Zucchini Cake

Name: Chocolate Zucchini Cake
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 2 cups (250g) all-purpose flour (spoon & leveled); 3/4 cup (62g) unsweetened natural cocoa powder; 2 teaspoons baking soda; 1/2 teaspoon baking powder; 1 teaspoon espresso powder (optional); 1/2 teaspoon salt; 1 cup (240ml) canola or vegetable oil; 1 cup (200g) granulated sugar; 3/4 cup (150g) packed light or dark brown sugar; 4 large eggs, at room temperature; 1/3 cup (80g) sour cream or plain yogurt, at room temperature; 2 teaspoons pure vanilla extract; 3 cups shredded zucchini (about 3 medium)*; 1 cup (180g) semi-sweet chocolate chips; chocolate frosting or vanilla frosting