Product Recall: Kraft and Polly-O String Cheese and String Cheese Twists. Click here
HEAT oven to 350°F.
COOK potatoes in boiling water in large saucepan 20 min. or until tender; drain.
MASH potatoes. Add milk, cream cheese and sugar; beat until fluffy. Spoon into 9-inch square baking dish sprayed with cooking spray; top with marshmallows.
BAKE 20 min. or until heated through.