Spring Garden Cake

Ingredients

• 3/4 cup all-purpose flour
• 1/3 cup cocoa powder
• 3/4 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1/4 teaspoon cinnamon
• 1/4 teaspoon salt
• 1/2 cup + 2 1/2 tablespoons sugar
• 1/3 cup brown sugar
• 2 eggs
• 2 1/2 tablespoons water
• 1 teaspoon vanilla
• 1/2 cup sour cream
• 2 tablespoons vegetable oil
• 2 cups American buttercream
• 1/2 cup semi-sweet chocolate chips