Grate carrot using box grater.
Add grated carrot, water, cinnamon, allspice, vanilla extract and salt to a pot. Bring to a simmer over medium-low heat then cover and cook for 1 minute.
Add rolled oats, egg white and raisins. Stir to combine. Cook over low heat for 2-3 minutes, stirring constantly.
Add milk and cook for 1-2 minutes, stirring constantly.
Sweeten to taste with stevia. Top with chopped walnuts and enjoy!