INGREDIENTS
1/4 cup
unsalted butter, softened
1 cup
granulated sugar
1/2 tsp
baking soda
1/4 tsp
baking powder
1/4 tsp
kosher salt
1/4 cup
canola oil
1/2 tsp
vanilla extract
1/4 cup
milk
1
large egg
1 1/4 cups
all-purpose flour
1/2 cup
unsweetened cocoa powder
1 cup
shredded zucchini
1/2 cup
semi-sweet chocolate morsels
3/4 cup
unsalted butter, softened
3 1/2 cups
powdered sugar
1/2 cup
unsweetened cocoa powder
1/4 cup
milk
1/2 cup
semi-sweet chocolate morsels, for garnish