Add the coconut yogurt, almond milk, mango and vanilla to a food processor (or blender). Blend until you get a thick liquid and no larger chunks of mango remain.
Pour the liquid into a large baking dish or glass bowl and add the chia seeds. Whisk well to combine, making sure there are no large clumps.
Cover and transfer to the fridge. Allow to set for 3-4 hours or until thick.
Serve by itself or topped with fresh mango and toasted coconut if desired!