Butter Rum Caramels

Directions

1. 1.

   Line bottom and sides of an 8-inch square baking pan with parchment paper and oil parchment.

2. 2.

   Bring brown sugar, cream, butter, salt, and 1/4 cup rum to a boil in a 3- to 4-quart heavy saucepan, stirring until butter is melted, then boil over moderate heat, stirring frequently, until thermometer registers 248°F (firm-ball stage), about 15 minutes. Remove from heat and stir in vanilla and remaining teaspoon rum. Pour into baking pan and cool completely until firm, 1 to 2 hours. Invert caramel onto a cutting board, then discard parchment and turn caramel glossy side up. Cut into 1-inch squares.