Gather all your ingredients measured and ready to go.
In a mixing bowl, combine milk, old fashioned oats, Greek yogurt, chia seeds, honey or agave nectar, and cinnamon. Stir until well incorporated.
Fold in your choice of applesauce or pumpkin puree, adjusting the amount based on your taste preference.
Pour the mixture into a jar or airtight container, sealing it well to prevent spills.
Place the container in the refrigerator and chill overnight to allow oats to absorb liquid and flavors to meld.
In the morning, stir the oatmeal and top with fresh fruits, nuts, or seeds as desired. Enjoy your clean, delicious breakfast!