Combine and Stir: In a small mason jar or airtight glass container, combine the rolled oats, milk, Greek yogurt, chia seeds, honey or maple syrup, vanilla extract, and a pinch of salt. Stir well with a spoon to make sure all the oats are underwater and the chia seeds are mixed in.
Chill Overnight: Seal the jar tightly with a lid. Put it in the refrigerator to soak overnight, or for at least four hours, until the oats soak up the liquid and get thick and creamy.
Top and Serve: In the morning, take off the lid and give the oats a quick stir. Add your family's favorite fresh fruit like sliced bananas or blueberries, a drizzle of honey, or a spoonful of nut butter. Grab a spoon and dig right in!