In a medium saucepan, melt the butter over medium high heat. Add apples and cinnamon and cook for 2-3 minutes until the apples are softened.
Pour in the water, turn the heat up to high, and bring to a low boil. Add the oats and reduce the heat to medium/medium high. Cook, stirring occasionally for 5 minutes.
Serve with your favorite oatmeal topping. Nuts go very well with apples and add an extra boost of nutrition.