Gather all your ingredients on your countertop.
In a mixing bowl, add the rolled oats, salt, and protein powder or chia seeds. Stir to combine.
Add the peanut butter, milk, and yogurt (or mashed banana) to the dry mixture. Add sweetener if desired.
Mix all ingredients thoroughly until well combined, ensuring the peanut butter is evenly distributed.
Pour the mixture into your jar or container, leaving some room for toppings.
Seal the container and refrigerate overnight to allow the flavors to meld.
In the morning, stir the oats and add your favorite toppings before enjoying!