Combine all ingredients in a large mason jar or bowl, mix it up well and store in a container with a lid.
Refrigerate overnight and mix up in the morning, add milk or more water to loosen up. Optionally microwave for 30 seconds if you'd like to eat it warm or just service cold and add desired toppings such as: fruit, honey and more cinnamon!
Combine all ingredients in a small saucepan and heat over low-medium heat while stirring. After a few minutes, the porridge will thicken.
Pour the porridge out after you like the texture and serve with desired toppings.