Combine the oats, chia seeds, yogurt, milk, and honey in a medium mixing bowl. Stir to combine.
Divide half of the mixture into the bottom of two mason jars or sealable containers.
Mash the raspberries with a fork. Divide evenly between the two jars, creating a middle filling layer.
Top with the remaining oats. Cover and refrigerate overnight or up to 5 days.
