1-1/2 cups light brown sugar, packed
2/3 cup light corn syrup
1/4 cup butter or margarine
1/2 cup heavy cream
1/2 teaspoon vanilla
Combine the sugar, corn syrup, and butter in a saucepan over low heat. Stir frequently until the sugar has dissolved. Continue cooking until the mixture forms a firm ball in cold water (242 deg. on a candy thermometer). Remove mixture from the heat; add the cream and vanilla. Stir to blend. Cool. Serve over ice cream or warm apple pie.
Makes about 1-1/2 cups sauce.