01 - Add almond milk, protein powder, peppermint extract, cocoa powder (if using), honey or maple syrup (if using), frozen banana, and ice cubes to a blender.
02 - Blend on high speed until the mixture is smooth and creamy, approximately 30–60 seconds.
03 - Taste the shake and adjust sweetness or peppermint intensity as desired by adding more honey, syrup, or extract in small increments.
04 - Pour into a tall glass and serve immediately. Garnish with fresh mint leaves or dark chocolate shavings if desired.