Line a 9" square pan with foil extends over sides of pan; butter foil. In a saucepan, combine sugar, margarine, and milk. Bring to a boil over medium heat, stirring constantly. Boil 5 minutes, stirring constantly. Remove from heat. Add marshmallow cream and white chocolate discs; blend until smooth. Stir in vanilla extract. Pour into prepared pan. Cool to room temperature.
Per serving: 112 Calories; 4g Fat (30% calories from fat); 1g Protein; 20g Carbohydrate; 0mg Cholesterol; 33mg Sodium
