Preheat oven to 400°F (200°C). Scrub potatoes and pat dry. Pierce skins with fork. Place potatoes directly on oven rack. Bake 50-60 minutes. Cut lengthwise slice from top of each potato. Scoop out potato, leaving 1/4 inch (.6cm) thick shells. Mash potato flesh in bowl. Add sour cream, milk, butter and Mrs. Dash® Original Blend; mix well. Spoon mixture into potato shells. Place filled potatoes in baking dish. Bake 20 minutes or until lightly browned.