Sprinkle with rosemary and black pepper, if desired.
Place in roasting pan.
Roast for 20 minutes or until temperature reads 145 degrees F (63 degrees C), on meat thermometer.
Remove pork from pan and let stand 10 minutes.
Mix cornstarch, broth, orange juice, molasses and brown sugar until smooth. Set aside.
Heat remaining oil in medium saucepan over medium heat.
Add shallots and cook until tender. Stir cornstarch mixture and add. Cook until mixture boils and thickens, stirring constantly. Stir in oranges and heat through.