Banana Bread with orange

6 tablespoons unsalted butter , melted 1 1/2 cups all-purpose flour 2 large bananas , peeled 1/2 cup whole wheat flour 2 teaspoons baking powder 1/2 teaspoon[...]

1/2 cup unsalted butter , at cool room temperature 2/3 cup brown sugar , firmly packed 1 teaspoon vanilla extract 1 teaspoon ground cinnamon 1/4 teaspoon[...]