In a medium saucepan combine oatmeal, quinoa, milk, molasses, salt and ground cinnamon. Bring to a boil and then reduce to a simmer. Cook until the liquid is mostly absorbed and desired consistency is achieved, stirring in diced apple in the last 2 minutes of cooking. Remove from heat and stir in flax seeds. Transfer to serving bowl(s) and top with maple syrup and walnuts.