1 cup plus 2 tablespoons whole wheat flour
1/2 cup unsweetened cocoa powder, sifted
1 teaspoon baking soda
1 teaspoon baking powder
1/2 teaspoon salt
3/4 teaspoon ground cinnamon
1/3 cup coconut sugar (use 1/2 cup for a sweeter loaf)
1/3 cup coconut oil, melted
2 large eggs, lightly beaten, at room temperature
3 teaspoons milk (cow's milk, almond milk, or coconut milk are all fine!)
2 teaspoons vanilla extract
1 and 1/2 cups VERY ripe banana, peeled and mashed (about 5 or 6 bananas)
3/4 cup chopped walnuts, optional
1/2 cup semi-sweet or dark chocolate, chopped into small chunks, optional