Add all ingredients to a blender and blend until creamy and smooth, scraping down sides as needed.
If too thick, add more dairy-free milk.
Taste and adjust flavor as needed. For more pumpkin flavor, add more pumpkin pie spice.
For more sweetness, add more banana, or a bit more vanilla protein powder - optional (or a bit of maple syrup, agave or stevia extract).
Serve immediately. Best when fresh, though will keep in the refrigerator well covered up to 2 days.
