Butterscotch Sauce

3/4 cup dark brown sugar, packed
1/2 cup dark corn syrup
6 Tbsp. unsalted butter, cut into pieces
1/4 cup sugar
1/4 tsp. salt
1/2 cup whipping cream
1 tsp. vanilla

In a heavy saucepan combine the brown sugar, syrup, butter, sugar and salt. Stir over low heat until both sugars dissolve. Increase heat and cook until bubbly and thick, stirring constantly, about 2 minutes. Remove from heat and whisk in the cream and vanilla. Cover and chill. Spoon over vanilla ice cream for a butterscotch sundae.

Makes 2 cups