To a high-speed blender, add frozen banana, avocado, protein powder of choice, greens, and dairy-free milk. At this time, add any desired add-ins, such as adaptogens, seeds, or additional fruits and vegetables (such as berries or cucumbers).
Blend on high until creamy and smooth, scraping down sides as needed. If smoothie is too thick, add more dairy-free milk to thin. If too thin, add more frozen banana or avocado.
Taste and adjust flavor as needed, adding more banana for sweetness, avocado for creaminess, or greens for vibrant green color. Protein powder can also be used to add more sweetness (depending on brand / flavor).
Divide between serving glasses and enjoy! Best when fresh, though leftovers will keep covered in the refrigerator up to 24 hours or in the freezer up to 2 weeks.
*Nutrition information is a rough estimate calculated with vegan protein powder and without additional add-ins.