Add dry old fashioned rolled oats, chia seeds if using, your choice of milk, sweetener and spices to the bottom of the glass jar; stir to combine.
Top with your choice of nuts, seeds, dried or fresh fruit.
Seal the jar with a lid and refrigerate overnight. Grab a spoon in the morning and off you go!
Notes
Note: I used 1/2 pint jars in the photo, they're super cute, and a great size for kids, but I prefer to use pint jars, they're perfect for adults and much easier for mixing!