Peel and chop the bananas. Pop them in your blender. Add the peanut butter, almond milk and 1 tsp cocoa powder to your blender.
Add a few ice cubes and blend till smooth and creamy. Taste and add a pinch or two more cocoa powder to taste.
Peel and chop your bananas. Pop them in a freezerproof container. Freeze for at least 4 hours. This will help give you a cooler and creamier smoothie.