Firstly, peel and chop the banana and add it to the mixer jar.
Add 1 cup cold milk.
Further, add ½ tablespoon cocoa powder.
Also, add 2 teaspoons honey.
Lastly, add a pinch of cinnamon powder.
Blend until smooth.
Pour the smoothie in a glass.
Serve chocolate Banana Smoothie topped with chocolate curls.