Whisk together milk, maple syrup, vanilla, and salt in a medium bowl. Sprinkle in chia seeds and whisk vigorously for 1 minute until no clumps remain.

Let sit on the counter for 5 minutes, then whisk again for 30 seconds to break up any gelling seeds.

Cover and refrigerate for at least 4 hours, ideally overnight.

Stir the chilled pudding, spoon into two bowls, and top with berries, a drizzle of honey, and toasted nuts if using.