Prepare the IngredientsGather all ingredients and ensure the avocado is ripe for a smooth blend.
Add to BlenderAdd almond milk, avocado, spinach (if using), nut butter, sweetener, protein powder, vanilla, and ice cubes to a blender.
Blend Until SmoothBlend on high for 30–45 seconds or until completely smooth and creamy.
Taste and AdjustTaste the smoothie and adjust sweetness or thickness by adding more almond milk or sweetener if needed.
ServePour into a glass or jar. Let sit for 2 minutes if you like it colder, or serve immediately with a straw or spoon.