Add the frozen bananas, blueberries, avocado, almond butter, soy milk, protein powder, spirulina, ¼ cup coconut yogurt, chia seeds, and vanilla extract to a high-speed blender.
Blend until completely smooth and creamy.
If the smoothie is too thick, add a splash of extra soy milk and blend again to reach your desired consistency.
To decorate the glass, use the back of a spoon to swirl 1–2 tablespoons of extra coconut yogurt around the inside of the glass (optional).
Pour the smoothie into the glass and serve immediately.
