In your blender, combine the old-fashioned oats, vanilla protein powder, almond milk, Greek yogurt, chia seeds, maple syrup, vanilla extract, ground cinnamon, and kosher salt. Blend until smooth and creamy.
Once blended, pour the mixture into a mixing bowl. Stir well to ensure everything is combined and adjust sweetness if needed.
Divide the mixture evenly into storage containers. Layer with additional Greek yogurt and a drizzle of maple syrup if desired. Seal and refrigerate overnight.
In the morning, stir the oats and add a splash of milk for a thinner consistency. Top with fruits, nuts, or extra cinnamon and enjoy!