Rice Pudding

3 cups milk
2 Tbsp cornstarch
1/3 cup sugar
1/2 cup long grain rice, uncooked
1/2 tsp cinnamon
1/4 cup raisins, if desired
1 tsp vanilla

Combine milk, cornstarch, and sugar in a large saucepan. Bring to a slow boil, stirring constantly. Add rice. Cook until thick, stirring well. Remove from heat. Stir in remaining ingredients. Cool slightly if serving warm, otherwise cover and chill.