01 - In a medium bowl, whisk together the coconut milk, chia seeds, maple syrup, vanilla extract, key lime zest, and key lime juice until well combined and smooth.
02 - Let the mixture sit for 5 minutes to allow the chia seeds to begin absorbing liquid, then whisk again thoroughly to break up any clumps and ensure even distribution.
03 - Cover the bowl tightly and refrigerate for at least 2 hours, or overnight, until the pudding thickens to a rich, creamy consistency.
04 - Stir the pudding well before serving. Spoon into individual bowls or glasses, dividing evenly among 4 servings.
05 - Top each portion with a dollop of coconut yogurt, a sprinkle of crushed graham crackers, and extra lime zest or thin lime slices as desired. Serve chilled.