Place sugar and milk in crockpot and stir to dissolve sugar. Stir in rice, cinnamon sticks and vanilla. Cover and cook on high for two to three hours, until the rice is tender. After it starts to simmer, stir it once or twice to make sure rice isnt clumping.

Pour into a serving dish, sprinkle with nutmeg and allow to cool and thicken. Serve chilled.