Add pistachios, almond milk, maple syrup, vanilla, and salt to a blender.

Blend until completely smooth and creamy.

Pour the mixture into a bowl or individual jars.

Stir in the chia seeds until evenly combined.

Let sit for 10 minutes, then stir again to prevent clumping.

Cover and refrigerate for at least 4 hours or overnight until thickened.

Stir before serving and adjust sweetness if needed.