In a large saucepan, stir together rice and milk. Add cinnamon stick and bring to a low simmer over medium-low heat, whisking to keep from sticking. Add egg substitute and cook until just heated through (do not let eggs cook). Whisk in the sugar substitute and continue cooking over medium-low heat until mixture is thickened, about 10 minutes. Remove pan from the heat and remove the cinnamon stick. Add ground cinnamon and stir in raisins. Ladle rice pudding into 6 custard glasses or serving cups. Sprinkle the top with a pinch of ground cinnamon, if desired. Serve warm or refrigerate until chilled and serve cold.