Preheat 12 quart Nesco roaster to 425�F.
Lightly spray cookwell with cooking oil, place meat on rack. Combine margarine and browning sauce. Brush over meat. Sprinkle on garlic, pepper and herbs. Set meat in preheated cookwell. Cover; roast for 10 to 15 minutes or until lightly browned.
Reduce temperature to 325�F. Roast 2 1/2 to 3 hours (until 140 on meat thermometer).