In a large saucepan, combine 2 cups milk, Butter Buds, evaporated milk, rice, and sugar. Bring to a boil over medium heat. Reduce the heat, cover, and simmer 30 minutes, stirring occasionally. Stir the cornstarch into the remaining 3/4 cup milk. Add to the rice mixture. Cook, stirring constantly, for 1 minute. Add the raisins, Sweet ‘N Low, vanilla, and cinnamon. Stir until well blended. Pour the pudding into a 1-quart dish. Sprinkle with additional cinnamon and cool to room temperature. Serve at room temperature, if desired, or refrigerate until served.