Making My Own Caramel Sauce w/ Variation

3/4 c Firmly packed brown sugar
3/4 c Sugar
1/3 c Butter or margarine
1/2 c Light corn syrup
2/3 c Whipping cream

Combine all ingredients except whipping cream in a
saucepan. Cook over medium heat, stirring, until
mixture comes to a full boil. Cool 5 minutes; stir
in whipping cream. Serve warm or divide into 3 3/4
cup portions to prepare variations.

Variations:

Rum-Raisin: While still warm, stir 1/4 cup raisins
and 1/4 tsp rum extract into 3/4 cup sauce

Banana: Cool sauce completely. Cut a banana into
cubes; stir into sauce.