Add to a blender rolled oats, maple syrup, chia seeds (optional), and a pinch of salt.
Add Greek yogurt and milk.
Blend on high speed for 30 seconds to 1 minute, or until fully smooth.
Transfer the mixture to a mason jar and seal with lid.
Refrigerate the oats for at least 2 hours, or overnight for the creamiest result. Store them on a shelf rather than the fridge door to avoid frequent changes of temperature.
Before serving, give the oats a good stir from bottom to top. Add your favorite toppings and enjoy.