Add banana, carrot, date (optional), cinnamon, vanilla, fresh ginger (or gound ginger), nutmeg, dairy-free milk (starting with the lesser amount), and protein powder (optional) to a high speed blender and blend until creamy and smooth. Add more dairy-free milk as needed to thin / encourage blending.
Taste and adjust flavor as needed, adding more cinnamon for warmth, ginger for spice / kick, or date for sweetness.
Serve as is or garnish with shredded carrot, shredded coconut, or walnuts or hemp seeds (optional). Best when fresh. Will keep in the freezer up to 1 month (thaw before enjoying).
*Nutrition information is a rough estimate calculated with the lesser amount of fortified unsweetened almond milk and without optional ingredients.