To prepare the smoothie, add the peeled bananas, peanut butter, ice, cocoa powder, and milk to a blender. Purée until you get a thick milkshake-like consitency. Serve immediately.
*Instead of cocoa powder, you can use chocolate flavored whey powder, if desired.
**For the milk, you can use anything you like: whole, skim, soy or even rice or almond milk.
- 2 whole ripe, peeled bananas
- 4 tbsp peanut butter
- 1 cup ice cubes
- 2 tbsp cocoa powder*
- 2 cups milk**