Preheat oven to 350
degrees F (180 degrees C) and place rack in the center of the oven. Line 12
regular-sized muffin cups with paper liners or spray each cup with a non stick
large bowl whisk together the sugar, flour, cocoa powder, baking powder, baking
soda, and salt.
In another large bowl,
whisk together the egg, mashed banana, water, milk, oil, and vanilla extract. Add the wet ingredients to the
dry ingredients and stir, or whisk,
until combined. Pour or scoop the batter
into the muffin cups, about 3/4 full, and bake
for about 20
minutes or until a toothpick inserted in the center of a cupcake comes out clean.
Remove from oven and let
cool on a wire rack. Frost with the Chocolate Frosting.
Frosting: Melt the chocolate in a heatproof bowl placed over a
saucepan of simmering water. Remove from heat and let cool to room temperature.
In the bowl of
your electric mixer, or with a hand mixer, beat the butter until smooth and
creamy (about 1 minute). Add the sugar and beat until it is light and fluffy
(about 2 minutes). Beat in the vanilla extract. Add the chocolate and beat on
low speed until incorporated. Increase the speed to medium-high and beat until
frosting is smooth and glossy (about 2 -3 minutes).
for Demonstration Video