In small bowl, beat egg yolks; set aside. In 2-quart nonstick saucepan, heat cream and baking chips over medium heat, stirring constantly, until chips are melted. Stir about 1 cup of the hot cream mixture into egg yolks until well blended. Pour egg mixture back into saucepan; reduce heat to low. Cook 10 minutes, stirring constantly, until thickened.