Step 1: Preheat and Prepare ● Preheat your oven to 350°F (175°C). Grease and flour a 9x13-inch baking pan or lineit with parchment paper.
Step 2: Mix the Dry Ingredients ● In a large bowl, whisk together the flour, cocoa powder, baking powder, baking soda,and salt. Set aside.
Step 3: Combine the Wet Ingredients ● In another bowl, beat together the sugar, brown sugar, and vegetable oil until wellcombined. Add the eggs one at a time, beating after each addition. Stir in the vanillaextract.
Step 4: Incorporate the Zucchini ● Fold the grated zucchini into the wet mixture. The moisture from the zucchini willblend into the batter, keeping it soft and fudgy.
Step 5: Bring It All Together ● Gradually add the dry ingredients to the wet mixture, alternating with the buttermilk.Mix until just combined. Do not overmix to avoid a dense cake.
Step 6: Add Chocolate Chips (Optional) ● If you want an extra burst of chocolate, fold in the chocolate chips.
Step 7: Bake ● Pour the batter into the prepared pan and smooth the top. Bake for 45-50 minutes, oruntil a toothpick inserted into the center comes out clean.
Step 8: Cool and Serve ● Allow the cake to cool completely in the pan before slicing. For an extra treat, topwith your favorite frosting or a dusting of powdered sugar.