In a small dish, stir the chia seeds and water together. Set aside and let soak for 10 minutes.
Place the blueberries in a blender along with the maple syrup and add in the soaked chia seeds which will now be a gel.
Pulse in the blender until it's a 'jammy' consistency. I find it only needs a few pulses with ripe-ish blueberries.
Pour into a small glass jar and store in the fridge.
Video
Notes
Storing and Freezing
Store in a glass jar with a lid in the fridge. Chia jam will typically last for up to 2 weeks when stored properly in the refrigerator. You can also freeze chia jam for longer-term storage. Transfer the jam to airtight containers or freezer-safe jars and label and date the containers. This makes it easier to keep track of the jam's freshness. Store in the freezer for up to 3 months.