Prepare your fruits by rinsing fresh berries under cold water, removing any stems, and slicing the banana into smaller pieces.
In the blender, combine the frozen mixed berries, banana slices, yogurt, and almond milk.
If desired, add honey for sweetness and chia seeds for added nutrition to the blender.
Blend the mixture on high speed until smooth. If the smoothie is too thick, add a little more almond milk until you reach your desired consistency.
Taste the smoothie and adjust sweetness or thickness as needed, blending again briefly if you make any adjustments.
Pour the smoothie into glasses and serve immediately.
You can also substitute fruits based on your preference or add spinach or kale for a green smoothie variation.