- Brownies:
- 2 cups white sugar
- 1 1/2 cups canola oil
- 4 large eggs
- 2 cups all-purpose flour
- 1/4 cup unsweetened cocoa powder
- 2 teaspoons baking soda
- 1 teaspoon ground cinnamon
- 1 teaspoon salt
- 1 teaspoon vanilla extract
- 3 cups grated zucchini
- 1 cup chopped nuts
- Frosting:
- 6 tablespoons unsweetened cocoa powder
- 1/4 cup melted butter
- 2 cups confectioners' sugar
- 1/4 cup milk
- 1/2 teaspoon vanilla extract
- Preheat oven to 350 degrees F (175 degrees C). Grease a rimmed baking sheet.
- Whisk white sugar, canola oil, and eggs together in a bowl. Mix flour, 1/4 cup cocoa powder, baking soda, cinnamon, and salt together in a separate bowl. Stir sugar mixture into flour mixture; add 1 teaspoon vanilla extract and mix batter. Fold zucchini and nuts into batter; pour onto the prepared baking sheet.
- Bake in the preheated oven until cooked through, 25 to 30 minutes. Cool brownies completely.
- Stir 6 tablespoons cocoa powder and melted butter together in a bowl; stir in confectioners' sugar, milk, and 1/2 teaspoon vanilla extract until frosting is smooth. Spread frosting on brownies.