Whisk the base: In a medium bowl or large jar, whisk the milk, yogurt, protein powder, vanilla bean paste, sweetener, and salt until smooth. Make sure no protein clumps remain.
Add chia seeds: Stir in the chia seeds, mixing well so they’re evenly dispersed.
Let the mixture sit for 2–3 minutes, then stir again to break up any settling.
Chill to set: Cover and refrigerate for at least 2 hours, ideally overnight. The chia will swell and thicken the mixture into a creamy pudding.
Adjust texture: After chilling, give it a good stir. If it’s too thick, add a splash of milk and whisk until silky.
If it’s too thin, stir in 1–2 teaspoons more chia and chill 10–15 minutes.
Serve and top: Spoon into bowls or jars. Add fresh berries, toasted nuts, or a drizzle of nut butter for crunch and extra flavor.