Bake 25 to 30 minutes, stirring vegetables and pears gently once or twice during baking, until pork has slight blush of pink in center and meat thermometer inserted in center reads 145° F, and vegetables are tender. Remove from oven; cover with foil and let stand 3 minutes before slicing. Cut pork into 1/2-inch slices. Serve with vegetables. Garnish with fresh sage leaves.