COMBINE water, rice and salt in medium, heavy-duty saucepan; bring to a boil. Reduce heat to low; cover. Cook for 10 minutes or until most of liquid is absorbed.
ADD evaporated milk, sugar and cinnamon; stir well. Bring to a boil; reduce heat to medium-low. Cook, uncovered, stirring occasionally, for 25 minutes or until creamy. Stir a small portion of rice mixture into egg; add back to the rice mixture and mix well. Bring to a boil. Cook, stirring frequently, for 1 minute. Stir in vanilla extract.
TRANSFER pudding to spooky serving bowl or eight individual bowls. Cover with plastic wrap, pressing wrap onto the pudding (this will prevent a skin from forming). Serve warm or refrigerate for 2 hours or until cold. Top with chopped candy bars or creepy confections.