- For Caramel Icing, if using a gas range the cook time will be much shorter. Combine 1 ½ cups sugar and ½ cup butter in 4-quart saucepan; cook over medium high-heat, stirring constantly, 7-10 minutes or until mixture is light golden brown. Remove from heat; slowly stir in warm whipping cream. Return to stovetop; cook over low heat, stirring occasionally 40-50 minutes or until candy thermometer reaches 230°F. Follow remaining recipe directions as stated above.