Boil potatoes about 30 minutes or until tender. Drain well.
In mixing bowl, combine hot potatoes, milk, mayonnaise, butter, salt and pepper. Whip 1 minute at low speed, then 1 minute at high speed until potato mixture is smooth. Add cooked vegetable; keep warm until served.
Tips: Ready-to-use cole slaw mix may be substituted for mixed vegetable. Mashed potatoes may be prepared ahead and reheated to serve with meats.
Nutritional Analysis per serving: 126 calories, 2.7 g protein, 3.2 g fat, (22% calories from fat), 22.4 g carbohydrates, 4mg cholesterol, 2.91 g fiber.