Ingredient:

• 1-1/4 cups all-purpose flour
• 3/4 cup sugar
• 1/3 cup baking cocoa
• 1 teaspoon baking soda
• 1 teaspoon ground cinnamon
• 1/2 teaspoon salt
• 1 large egg, room temperature
• 1/2 cup canola oil
• 1/3 cup whole milk
• 1 tablespoon lemon juice
• 1 teaspoon vanilla extract
• 1 cup shredded zucchini
• 1/2 cup miniature semisweet chocolate chips, optional