Add Greek yogurt, frozen banana, peanut butter, cocoa powder, protein powder, and ice.
Add honey if using.
Blend on high for 45 to 60 seconds until smooth and creamy.
Taste and adjust sweetness or chocolate intensity as needed.
Pour into a tall glass and serve immediately.
Notes
For a thicker smoothie, use more frozen banana or add an extra tablespoon of Greek yogurt. For a thinner smoothie, add a splash more almond milk. Best consumed within 10 minutes of blending.