Combine cocoa powder, protein powder, banana, strawberries, peanut butter, 1/2 cup coconut milk, and ice (if using) in a blender. Blend until smooth. If the smoothie is too thick, add more coconut milk until the desired consistency is reached.
Notes
TIP: If you prefer cold smoothies but don’t care to water down the smoothie with ice, use frozen strawberries in place of fresh and omit ice!