In a bowl, combine the rolled oats, half of the ground cinnamon, chia seeds, and optional stevia. Mix well to evenly distribute the ingredients.
Sprinkle the vanilla extract over the oat mixture.
Pour in the skim milk and stir until all the ingredients are well combined. Stir well and place the mixture in the refrigerator overnight or for at least 4 hours to allow the oats to soak and the flavors to blend together.
Divide the mixture into two glass jars. Place the sliced bananas evenly at the bottom of each jar.
Divide the oat mixture between the two jars, pouring it over the banana slices.
Sprinkle the remaining ground cinnamon over the top of each jar for added flavor.
Using a small spoon, create a spiral-shaped topping on the surface of each jar of oats, resembling a cinnamon roll. Start from the center and work your way outward.
Sprinkle with nuts.
Before serving, give the oats a good stir to ensure everything is well mixed.
Enjoy your delicious Cinnamon Roll Overnight Oats straight from the refrigerator or warm them up in the microwave if desired.