Rinse the spinach and measure out all ingredients. If using rolled oats, consider soaking them for 5 minutes in a little water or kefir for a smoother texture.
Add spinach, avocado, kefir, banana, oats, honey, vanilla extract, flaxseeds, and ice cubes to a blender.
Blend on high speed until smooth and creamy, about 1-2 minutes.
Taste the smoothie and add more honey or vanilla extract if you prefer it sweeter. Add more kefir or water if the consistency is too thick.
Enjoy immediately for maximum freshness.
Notes
No Kefir: Use plain whole-milk Greek yogurt instead.
Gluten-free: Make sure your oats are gluten-free.
