Using a coffee grinder, coarsely grind the rice grains. This step is optional.
Place rice and water in a saucepan and bring to a boil. Reduce the intensity of heat to maintain boiling. Stir for about 10 minutes or until rice is tender.
Add chopped apple, brown sugar, margarine, salt, cinnamon, flax milk and cook, stirring frequently, until the preparation has a porridge consistency.
When serving, garnish with dried cranberries and additional brown sugar if desired.