Gather the ingredients - peanut butter can be substituted by Nutella :) I recommend using a coffee or chocolate yogurt.
Combine all of the ingredients into a blender. It may look gross now, but it'll be delicious in only a few moments!
Blend until everything is mixed thoroughly :)
Serve and enjoy! ( For the chocolate effect on the sides of the glass, simply guzzle chocolate syrup around the inner cup before pouring the smoothie. )