INGREDIENTS
1 cup
light brown sugar, packed
1/2 cup
unsalted butter, melted
1
large egg
1 tsp
vanilla extract
1 cup
all-purpose flour
1/4 tsp
kosher salt
1/2 tsp
cinnamon
1 cup
shredded zucchini
1/2 cup
unsalted butter, softened
2 1/2 cups
powdered sugar
1 tsp
cinnamon
2 tbsp
milk