Put milk in pan and bring to boil. Add salt and sprinkle in the oats, stirring continuously.
Put over low heat and let oats simmer for 10 minutes, stirring occasionally.
Meanwhile, peel, halve, core and grate apples. When oatmeal is creamy and most of liquid has evaporated, stir in grated apple and apple pie spice. Spoon into serving bowls and drizzle with honey if using. Tip: stir in 1/2 cup chopped walnuts just before serving for a deliciously crunchy oatmeal.