Pulse the blueberries and lemon zest in a blender until broken down. Transfer the blueberry mixture to a medium bowl and stir in the milk and maple syrup. Stir in the chia seeds until well combined.
Divide the chia pudding equally between 4 pint-size jars or small bowls. Cover the jars/bowls with lids or plastic wrap and refrigerate for at least 2 hours (preferably overnight).
Before serving, stir the mixture again and garnish with slivered almonds, fresh blueberries, and/or yogurt
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Notes
As written, this recipe makes a chunky blueberry pudding. For a smoother texture, add the blueberries, lemon zest and milk to a blender. Blend on high until smooth.
For a sweeter pudding, add 1 teaspoon maple syrup, agave, or honey to the other ingredients before blending.
To Store: Transfer to an airtight container and store in the refrigerator for up to 5 days.