Mix Ingredients:
In a mixing bowl or jar, combine the chia seeds, milk, sweetener (if using), and vanilla extract. Stir or whisk well to ensure the seeds are evenly distributed and not clumped together.
Let It Rest:
Cover the bowl with plastic wrap or secure the lid on the jar. Place it in the refrigerator for at least 2 hours, or overnight for the best texture.
Stir Again:
After 15–20 minutes of refrigeration, give the mixture another stir to break up any clumps of chia seeds.
Check Consistency:
Once set, the chia pudding should have a creamy, pudding-like texture. If it’s too thick, you can stir in a splash of milk to loosen it up.
Serve and Top:
Divide the pudding into serving bowls or jars. Add your favorite toppings and enjoy!