Heat butter over medium heat in a saucepan. Add oats. Cook, stirring frequently, until oats begin to smell toasty, about 2-3 minutes. Add milk, water, salt and cinnamon and stir to combine (be careful, the liquid may splatter a bit when you pour it in). Bring the mixture to a boil and then turn off the heat and cover the saucepan. Let sit for 7 minutes.
Remove the lid and serve with a generous sprinkle of brown sugar, a drizzle of cream and a dash of flaky sea salt over the top.
Calories: 223kcal | Carbohydrates: 29g | Protein: 6g | Fat: 9g | Saturated Fat: 5g | Cholesterol: 18mg | Sodium: 21mg | Potassium: 187mg | Fiber: 4g | Sugar: 2g | Vitamin A: 224IU | Calcium: 56mg | Iron: 2mg