In a small saucepan, add oats, water, grated carrot, crushed walnuts, raisins, cinnamon, nutmeg and salt. Let come to a simmer and let simmer while stirring once in a while until thickened to your liking.
Meanwhile in a separate small bowl, mix together the "frosting". Cream cheese, milk and vanilla sugar.
Pour the oatmeal to a bowl and top it with the "frosting", maple syrup and some crushed walnuts.