To the high-speed blender or food processor, add frozen bananas, coconut cream, and tahini. Blend on high until smooth and creamy, ensuring there are no remaining chunks of bananas on the side (use blender tamper accelerator to push down the bananas while blending). If you like a thinner smoothie, add a splash of plant-based milk.
Add half of the smoothie mixture to a bowl and mix it with blue spirulina powder.
Blend the rest of the smoothie with frozen raspberries.
Transfer to a bowl or jar and swirl together.
Add your favorite toppings and enjoy!