Fill large pot with water, and add rice. Bring to a boil, and boil for 5 minutes. Drain.
Put rice back in pot. Add milk alternative and sweetener (either maple syrup or sugar). Return to medium-high heat, and stir occasionally. Allow to boil slowly, continuing to stir occasionally, for about 30-40 minutes until pudding thickens and darkens. Add raisins, if desired, and stir another 5 minutes or so.
Remove from heat. Add in vanilla and/or cinnamon, if desired.