PORK TENDERLOIN WITH BALSAMIC RAISIN SAUCE

Steps:

• Place raisins and wine in heavy small saucepan. Let stand 8 hours. Add brown sugar and 1 TBSP balsamic vinegar to raisin mixture. Boil over high heat until reduced to 1 TBSP, about 7 min. Add chicken stock and continue to boil until mixture is reduced by half. Preheat oven to 450. Heat olive oil in heavy large ovenproof skillet over medium high heat. Add tenderloins and cook until brown on bottom, about 3 min. Add onions and continue cooking until pork is browned on all sides and onion is tender, about 6 minutes. Add garlic. Place skillet in oven and cook until thermometer inserted into thickest part registers 140, about 4 min. Transfer pork to platter. Tent with foil to keep warm. Add raisin mixture to skillet. Boil, scraping up any browned bits in skillet. Add remaining 1 TBSP vinegar. Remove from heat and whisk in butter. Season with salt/pepper. Slice pork into 1/2 inch thick slices. Arrange in slightly overlapping rows in center of large platter.