This recipe came in an insert (from Nabisco) in Restaurants and Institutions magazine. It serves 12 but should be scaleable to 6 servings.

In lightly greased roasting pan, place potatoes and garlic; cover tightly with foil. Bake at 350 degrees for 60 minutes or until potatoes are fork tender.

Blend mustard, margarine and parsley; toss with hot potatoes. Bake, uncovered, 15 minutes more. Serve immediately.