01 - Combine the mixed berries, banana, almond milk, Greek yogurt, and peanut butter in a blender jar.
02 - If using, add honey or maple syrup, vanilla extract, and a handful of ice cubes for added sweetness and texture.
03 - Blend on high speed until the mixture is completely smooth and creamy, stopping to scrape down the sides as needed.
04 - Taste the smoothie and adjust by adding more honey for sweetness, a splash of milk to thin, or extra ice to thicken.
05 - Pour into glasses and serve right away for the best flavor and texture.