In a large mixing bowl, whisk together the oats, chia seeds, cream cheese, Greek yogurt, maple syrup, almond milk, and vanilla extract until smooth.

Let the mixture sit for 5-10 minutes to thicken.

If using frozen blueberries, thaw and mash them with a fork, leaving some chunks for texture.

Divide the oat mixture evenly among 5 jars; layer or mix in mashed blueberries.

Seal jars and refrigerate for at least 4 hours, ideally overnight.

Serve cold or warm; add additional toppings like granola or fresh blueberries.