Place in shallow baking pan, under broiler in oven with door ajar cook for 15 minutes. Turn the meat over and cook for another 15 minutes for medium rare results. Take tenderloin out of pan and wrap tightly in foil with juices. Set on top of stove for an hour.
Buy one package of sauce mix, follow directions. *optional: and 1/2 cup of wine or sherry for extra flavor. Drizzle sauce over beef.