In blender, beat mashed potatoes with next 3 ingredients ... Fold carefully into potato mixture and pile into souffle dish that has been buttered. ... minutes. Serve at once.
In a small frying pan, ... heat. Put the mashed potatoes into a large mixing ... pint (5 cup) souffle dish with the remaining butter. ... sauce to the potato mixture, stirring well. Add the ... at once. Serves 4.