Chocolate Zucchini Cake

INGREDIENTS

2 cups

all-purpose flour

1 cup

unsweetened cocoa powder, sifted

2 tsp

baking soda

1/2 tsp

salt

1 1/2 cups

brown sugar

3/4 cup

vegetable oil or canola oil

1/4 cup

melted butter, cooled to room temperature

1/4 cup

buttermilk, at room temperature

large eggs, at room temperature

1 1/2 tsp

vanilla extract

2 cups

shredded zucchini

1 cup

chocolate chips

1/2 cup

unsalted butter, at room temperature

3 cups

confectioner’s sugar

2/3 cup

unsweetened cocoa powder

1/3 cup

milk

1 tsp

vanilla extract

salt