Today's Weight Watcher Recipe--3 point mashed potatoes. Just in time for Thanksgiving! Save all your points for dessert. Mashed Potatoes 3 1/2 pounds white potatoes, peeled and quartered 1 cup non-fat sour cream 1 cup skim milk You can prepare the fruit in advance and refrigerate. Place under the grill for just 5 minutes and it's ready to serve. Prepare meatballs according to basic recipe. Shape into meatballs, but do not cook. Combine brown sugar and cornstarch in a deep 2-quart microwave-safe casserole dish. Stir in pineapple juice, water, vinegar, and soy sauce.