Slice tenderloin into 1/2" thick Medallions. In a skillet, brown pork in oil for about 3 minutes on each side. Remove from skilet and set aside. In same skillet melt butter. Add the onion, mushrooms and garlic;saute for 1-2 minutes. Stir in flour until blended. Gradually stir in broth, rosemary, savory, salt and pepper. Bring to a boil; cook and stir for 1 minute or until thickened.
Lay pork medallions over mixture. Reduce heat; cover and simmer for 15 minutes or until meat juices run clear. Garnish with parsley if desired.