Mash the banana on a plate with a fork. Break it down so there aren't many large chunks.
Mix the mashed banana with almond milk and vanilla. Whisk until smooth.
Stir in chia seeds until fully submerged in liquid. This will allow mixture to thicken.
Cover mixture and place in fridge to set. Allow to chill overnight.
Place SunButter in bottom of container. Spoon in chia seed pudding and top with banana, coconut, and chopped nuts.