Combine first 3 ingredients in a saucepan; add water to cover, and bring to a boil. Cover, reduce heat, and simmer 15 minutes or until very tender; drain well.

Combine potato mixture, buttermilk, and remaining ingredients in a bowl; beat at medium speed of electric mixer 2 minutes or until smooth. Yield: 6 servings (serving size: 1 cup).

Per serving: 157 Calories; 0g Fat (2% calories from fat); 5g Protein; 35g Carbohydrate; 1mg Cholesterol; 207mg Sodium