1 stick butter unsalted cooled melted plus more for the pan (or)
2 tablespoons cocoa powder unsweetened
0.3 teaspoon vanilla extract
1 teaspoon vanilla extract
0.5 cup yogurt plain sour
Equipment
bowl
frying pan
oven
whisk
loaf pan
toothpicks
Directions
Make the banana bread: Preheat the oven to 350 degrees F. Lightly butter one 9-by-5-inch loaf pan or three 6-by-3-inch mini loaf pans.
Whisk the flour, granulated sugar, baking powder, salt, baking soda, cinnamon and nutmeg in a large bowl.
Add the chocolate chips.
Whisk the eggs, melted butter, yogurt, vanilla and orange zest (if using) in a medium bowl. Stir in the mashed banana. Fold the banana mixture into the flour mixture until just combined.
Spread the batter in the prepared pan(s).
Bake until a toothpick inserted into the center comes out clean, about 55 minutes for a standard loaf or 35 to 40 minutes for mini loaves. Cool 30 minutes in the pan(s) on a rack, then turn out onto the rack to cool completely.
Whisk the confectioners' sugar, cocoa powder, milk, vanilla and salt in a bowl.
Pour over the cooled banana bread and let set, 15 to 20 minutes.