Mix Ingredients: In a large mixing bowl or jar, combine rolled oats, milk, Greek yogurt, chia seeds, lemon zest, lemon juice, maple syrup, cinnamon, and salt. Stir well until all ingredients are fully combined.
Add Fresh Blueberries: Gently fold in the blueberries, reserving a few for garnish if desired.
Refrigerate: Cover the bowl or jar and refrigerate for at least 4 hours, or preferably overnight, to let the oats and chia seeds soak and thicken.
Stir: In the morning, give the oats a good stir. If needed, add a splash of more milk to reach your desired consistency.
Serve: Serve in bowls or jars, topped with additional blueberries or a sprinkle of lemon zest for a bright finish. Enjoy!