1-Preheat and Prepare: Preheat your oven to 350°F (175°C). Grease two 9-inch cake pans, line with parchment paper, and grease the parchment to ensure your cake releases perfectly after baking.

2-Mix Dry Ingredients: In a large bowl, whisk together flour, cocoa powder, baking soda, baking powder, espresso powder (if using), and salt until well combined. This ensures even distribution of leavening agents and flavor throughout the chocolate zucchini cake.

3-Combine Wet Ingredients: In another mixing bowl, beat canola or vegetable oil, granulated sugar, brown sugar, eggs, sour cream or yogurt, and vanilla extract until smooth and well combined. Remember to use room temperature eggs and dairy for optimal mixing.

4-Add Zucchini: Mix in shredded zucchini into the wet ingredients. A helpful tip: blot the shredded zucchini lightly with a clean towel to remove excess moisture and prevent your cake from becoming too wet.

5-Combine Mixtures: Gently fold dry ingredients into the wet mixture, stirring just until incorporated. Be careful not to overmix, which can lead to a tough cake. Stir in chocolate chips at the end.

6-Bake: Divide the batter evenly between the prepared cake pans. Bake for 28 32 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs clinging to it. Remember that your zucchini cake will continue to cook slightly after being removed from the oven.

7-Cool: Allow the cakes to cool in their pans for at least 1 hour before carefully removing them. This patience prevents the cakes from breaking while still warm.

8-Cream the Butter: In a large mixing bowl, beat the unsalted butter until creamy and smooth, about 2-3 minutes.

9-Add Sugar and Cocoa: Gradually add confectioners’ sugar and cocoa powder while mixing on low speed to prevent a powdered sugar cloud in your kitchen!

10-Add Cream: Beat until smooth, adding heavy cream 1 tablespoon at a time until your frosting reaches spreadable consistency.

11-Season: Mix in salt and vanilla extract, continuing to beat until light and fluffy.

12-Level any domed tops of your cooled cake layers using a serrated knife.

13-Place one cake layer on your serving plate or cake stand.

14-Spread a generous layer of chocolate buttercream on top.

15-Carefully place the second cake layer on top.

16-Frost the entire cake with remaining buttercream, making decorative patterns with your knife or spatula if desired.

17-Decorate with additional chocolate chips or chocolate sprinkles if desired.