Divide all ingredients except blueberries between 2 jars or airtight containers and mix until combined. Set aside.
Microwave wild blueberries for 30 seconds, then divide and spoon over the overnight oats mixture. Note: microwaving is optional since the berries will thaw in the refrigerator overnight, but this creates extra blueberry juice which makes the oats more colorful.
Refrigerate overnight, then stir and serve. I like to heat mine in the microwave for 30 seconds before serving.
Notes
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