In a medium bowl or 32 ounces (2 1/2 cup) mason jar, mix 2 cups milk (or same amount non-dairy milk) with chia seeds, pure vanilla extract, cover and let sit in the refrigerator for 5 minutes.
When it's done setting up in the refrigerator, divide into portions and serve with optional fruit, berries, maple syrup, or sweetener of choice. Enjoy!