To a blender, add almond milk and peeled banana. Whiz until blended and no chunks of banana remain. Add vanilla stevia until desired sweetness. Pour liquid into quart-sized jar with lid. Add chia seeds, cover and shake well. Place in refrigerator for 10 minutes then remove, shake again, then back in the refrigerator. Chill for an hour. Serve as is or garnish with a few slices of fresh banana and top with coconut whipped cream. (see notes)