Combine rolled oats, your chosen protein source (i used greek yogurt), and liquid (milk) in a jar or container. Mix thoroughly to ensure even distribution.
Add sweetener (honey) and vanilla extract or other flavor enhancers for a delightful taste.
Layer toppings such as berries or peanut butter on top of the oat mixture.
Seal the container and place it in the refrigerator overnight
The next morning, give the oats a good stir and enjoy them cold. If you prefer, you can warm them in the microwave.