01 - Place the frozen bananas, milk, unsweetened cocoa powder, creamy peanut butter, maple syrup or honey, vanilla extract, and salt into the blender jar.
02 - Process on high speed until the mixture becomes smooth and creamy, ensuring there are no visible lumps.
03 - Sample the blended mixture and, if needed, add more sweetener to reach desired taste.
04 - Divide the smoothie evenly between two glasses.
05 - Garnish with whipped cream, chocolate shavings, or crushed peanuts as preferred. Serve immediately.