Blend all the ingredients in a high-speed blender until smooth.
Alternatively, place all the ingredients, except the coconut water, in a food processor and pulse a few times to combine. Turn the motor on and drizzle in the coconut water in a thin stream. Keep processing until the mixture is very smooth.
Stored in an airtight container in the fridge, the yogurt will keep for 2 days.
Recipe by Go Dairy Free at https://www.godairyfree.org/recipes/vegan-banana-cashew-yogurt