Add oats, chia seeds, cinnamon, and a splash of vanilla to a jar or container.
Pour in milk and honey. Stir everything well.
Top with berries.
Repeat with a second layer to fill up the container.
Cover and refrigerate overnight.
Notes
Makes approximately two 12-ounce mason jar servingsStorage: store in an airtight container such as covered mason jars in the refrigerator overnight and up to 3 days.