1/2 cup golden raisins
1/4 cup dark rum
2 3/4 cups whole milk
1 cup long-grain white rice
1/2 cup firmly packed light brown sugar
1/2 cup granulated sugar
2 tablespoons unsalted butter
1 teaspoon salt
1/4 teaspoon ground cinnamon
1 cup half-and-half, plus 1/2 cup
1 tablespoon cornstarch
3 large egg yolks, lightly beaten
1 1/2 teaspoons vanilla extract