01 - Place frozen banana slices, milk, unsweetened cocoa powder, creamy peanut butter, maple syrup or honey, vanilla extract, and salt into a blender.
02 - Blend all ingredients on high speed until the mixture is smooth and creamy.
03 - Taste and adjust the level of sweetness as desired by adding more maple syrup or honey if needed.
04 - Divide the smoothie evenly between two glasses.
05 - Top each serving with optional whipped cream, chocolate shavings, or crushed peanuts. Serve immediately.