Rinse the rice in a fine mesh strainer. Set aside.
In a heavy bottomed saucepan, bring the milk to a boil
Stir in the rice, salt, sugar, raisins and mix well. Reduce the heat to LOW. Cover the saucepan.
Cook, covered, on low, for 20 minutes. Remove the heat. Stir in cinnamon and vanilla bean paste. Cover and let rest for another 10 minutes, off the heat.
With a fork, stir in the butter until completely melted.
Serve warm, sprinkle with more cinnamon, if desired.