01 - Place mixed berries, banana, Greek yogurt, almond milk, and protein powder in a blender.
02 - Add honey or maple syrup for additional sweetness, if desired.
03 - Incorporate chia seeds or flaxseeds for extra fiber and nutrients, if using.
04 - If working with fresh berries, add several ice cubes for a thicker, chilled drink.
05 - Secure blender lid and process on high speed until the mixture is thoroughly smooth and creamy.
06 - Taste and modify sweetness or thickness by blending in more milk or sweetener as needed.
07 - Evenly pour the smoothie into two glasses and serve without delay.