01 - In a medium mixing bowl, whisk together the coconut milk, chia seeds, maple syrup, vanilla extract, key lime zest, and key lime juice until thoroughly combined and no dry spots remain.
02 - Allow the mixture to rest for 5 minutes, then whisk vigorously a second time to break up any clumping chia seeds and ensure an even, smooth texture throughout.
03 - Cover the bowl tightly and refrigerate for at least 2 hours, or ideally overnight, until the pudding has thickened to a rich, creamy consistency.
04 - Remove from the refrigerator and stir the pudding well. Spoon into individual serving glasses or bowls, dividing evenly among four portions.
05 - Top each serving with a dollop of coconut yogurt, a sprinkle of crushed graham crackers, and additional lime zest or thin lime slices as desired. Serve chilled.