Chocolate Marble Banana Bread

Preheat the oven to 350F and grease a loaf tin. Set aside. Combine the melted butter and sugars until uniform, then add to the mashed bananas. Mix and beat in the eggs and vanilla. In a separate bowl, combine the gluten free flour, almond flour, baking powder, sea salt, and cinnamon. Whisk until uniform, add the wet mixture, and fold everything together until a batter forms. Then remove about half the batter and set aside in another bowl. To this bowl of batter, add the melted chocolate and cacao powder. Fold until uniform. To the loaf tin, add a scoop of the regular batter followed by a scoop of the chocolate batter, alternating until both batters have been used up. Lightly swirl the batters together using a knife, then bake for 45-50 minutes. Once the bread looks well risen, let cool completely before slicing.