Combine all the ingredients in a blender, and pulse. Continue blending until smooth.
Pour the smoothie in a tall glass, or several smaller glasses, and top with a sprinkle of espresso powder and a few cocoa nibs. Serve immediately.
Notes
For added sweetness, blend in a splash of maple syrup or honey, or you can use sweetened plain yogurt or vanilla yogurt.
To make this banana smoothie more substantial and filling, add 25 grams (½ cup) of rolled oats and blend them in.
lactose-free options:
This smoothie has a lot of dairy with lactose in it, if that's a problem, you can replace the regular milk with lactose-free milk.
For the yogurt, there are lactose-free plain yogurt options now in stores
vegan options:
you can try a vegan milk beverage to replace the cow's milk, like oat milk, almond milk, or even soy milk or coconut milk. Use the type of milk you like to drink.
you can try coconut milk yogurt or even oat milk yogurt, which is slowly becoming more common and easier to find.