In a small saucepan over medium heat, add milk, butter, cinnamon stick, cornmeal, sugar, and salt.
Using a whisk, stir constantly to avoid lumps. The mixture will begin to thicken after 2–3 minutes.
Once it reaches a creamy consistency with bubbling, turn off the heat. The mixture will continue to thicken as it cools.
Pour into a shallow bowl or plate. Top with the cinnamon stick and a dusting of ground cinnamon.
Let cool slightly before serving and enjoy!