In a jar or container with a lid, combine the oats, milk, Greek yogurt, protein powder, chia seeds, maple syrup, vanilla extract, and salt. Stir very well until the protein powder is completely incorporated and there are no lumps remaining.
1/2 cup oats, 1/2 cup unsweetened almond milk or milk of choice, 1/2 cup plain Greek yogurt, 1 scoop unflavored or vanilla protein powder or collagen, 1 tbsp chia seeds, 1 tbsp maple syrup, 1/2 tsp vanilla extract, Pinch of salt