In a medium bowl or jar, mix together rolled oats, your choice of milk, Greek yogurt, and nut butter until evenly combined. Add in maple syrup, vanilla extract, and a pinch of salt to enhance the flavor.

Gently fold in mini chocolate chips and chia seeds, if you are using them, to the base mixture.

Cover the bowl or jar tightly with a lid or plastic wrap, then place it in the refrigerator for at least 4 hours, preferably overnight.

When you're ready to enjoy, give the mixture a good stir. If the oats seem too thick, add a splash of milk to loosen the texture.

Scoop the prepared oats into your favorite bowl or enjoy straight from the jar. Enhance with additional mini chocolate chips or nuts if desired.