chocolate orange zucchini cake

Ingredients For chocolate orange zucchini cake

• 2 1/2 c

  all purpose flour
• 1/2 c

  unsweetened cocoa
• 2 1/2 tsp

  baking powder
• 1 1/2 tsp

  baking soda
• 1 tsp

  salt
• 1 tsp

  cinnamon
• 3/4 c

  unsalted butter, softened
• 2 c

  sugar
• 3

  large eggs, room temperature
• 1 1/2 tsp

  pure vanilla extract
• 1 tsp

  orange extract
• 2 tsp

  fresh grated orange rind
• 2 c

  grated zucchini, drained
• 1/2 c

  buttermilk
• 1/2 c

  chopped walnuts, optional
• COCOA ORANGE FROSTING
• 4 Tbsp

  softened unsalted butter
• 2 c

  powered sugar
• 3 1/2 Tbsp

  milk
• 1 tsp

  fresh grated orange rind
• 1 tsp

  pure vanilla extract
• 4 Tbsp

  unsweetened cocoa