In a personal blender or high speed blender, blend everything but the icing ingredients together: oats, protein powder, almond milk, yogurt, chia seeds, maple syrup, cinnamon, and salt.
Pour into 3 jars. Refrigerate for 2 hours or up to 4 days.
When ready to serve, stir together the icing ingredients (yogurt, maple syrup, and milk) and drizzle over the top.
Notes
You can also skip blending and simply stir these together for a delicious overnight protein oats recipe.