01 - Combine the mixed berries, banana, almond milk, Greek yogurt, and peanut butter in a blender jar.
02 - If desired, add honey or maple syrup, vanilla extract, and a handful of ice cubes for added sweetness and thickness.
03 - Blend on high speed until the mixture is completely smooth and creamy, scraping down the sides of the blender as needed.
04 - Taste the smoothie and adjust sweetness with additional honey, or thin or thicken the consistency with more almond milk or ice cubes.
05 - Pour into glasses and serve immediately for the best flavor and texture.