Mix soup mix and cooking oil in gallon-size ziploc bag.  Seal bag and mix well.  Add potatoes to bag and shake to coat.  Spread on shallow cookie sheet or baking pan and bake in hot oven (450 degrees) until done, about 45 to 50 minutes, turning once with spatula during cooking time.  Great side dish for lunch or dinner, also great the next morning on a biscuit if you manage any leftovers!