Preheat oven to 450°F.

Rub roast with. oil. Mix rosemary, 3/4 teaspoon salt and 1/2 teaspoon. pepper. Rub mixture over pork.

Place roast in baking. pan, bone side down and roast for 15 minutes. Reduce heat to 350°F and continue roasting. for 15 minutes. Add sweet potatoes and pears to roasting pan, baste with accumulated juices and continue to roast until internal temperature reaches 145°F.

Remove roast to carving board; tent with foil to keep warm. Remove potatoes and pears to serving bowl; keep warm.

Place roasting pan over high heat and bring juices. to boil. Add cider, stir and scrape up brown bits. Reduce heat; simmer sauce until reduced by one half

Carve roast. Surround meat with potatoes. and pears. Serve sauce on side.