Ingredients

• 1/2 cup butter
• 1 cup sugar
• 2 eggs
• 1 1/2 cups whole wheat flour or 1 1/2 cups all-purpose flour
• 3 tablespoons cocoa
• 1 teaspoon baking soda
• 1 teaspoon salt
• 1/2 teaspoon cinnamon
• 1 teaspoon vanilla
• 1/2 cup sour cream
• 1/2 cup walnuts or 1/2 cup pecans
• 1/2 cup chocolate chips
• 1 cup mashed banana