In a medium bowl, whisk together the flour, cocoa powder, baking soda and salt.
Put the bananas and sugar in another large bowl. Mash with a potato masher or a fork, until there are no pieces bigger than the size of a pea. Add the egg, mixing well to incorporate. Stir in the oil and vanilla, mixing well.
Stir in the flour mixture, a third at a time, until just combined.
If using chips, add and mix to combine.
Set the batter aside to rest for 30 minutes.
Preheat the oven to 350 degrees.
Spray a 8½x-4 ½-inch loaf pan, line with parchment if desired. Add your batter and bake for 50 minutes - hour or until a toothpick or cake tester comes out clean. I usually check on them, and rotate the pans after the first 30 minutes.
If baking as muffins, baking time is reduced to approximately 25 minutes.
Remove from the oven. Allow the loaf to cool in the pan for 5-10 minutes and then remove to a cooling rack.
Glaze
Sift the sugar and cocoa powder together into a bowl. Slowly whisk in the milk stirring until the mixture is smooth. Add the vanilla
Once your loaf id completely cool, pour your glaze evenly over the top.
Notes
If you want to lower the amount of refined sugar in this recipe, use very ripe bananas and replace the sugar with 1½ cups of raw coconut sugar or maple sugar. The bread will have a slightly richer, molasses-like hint to it.There are endlesss possibilities for customizing this banana bread to your liking. Try adding chocolate chips, peanut butter chips, different types of nuts, shredded coconut etc.This recipe also makes great muffins.