01 - Add frozen bananas, milk, cocoa powder, peanut butter, honey if using, and vanilla extract to blender.
02 - Blend on high speed until smooth and creamy.
03 - Taste and adjust sweetness as desired. Add additional milk for thinner texture if preferred.
04 - Pour into serving glasses and optionally top with whipped cream, chocolate shavings, or sliced bananas.
05 - Serve the smoothie immediately for optimal freshness and texture.