Sprinkle roast with salt and pepper. In a large nonstick skillet, brown roast in oil on all sides. Place in a shallow roasting pan coated with cooking spray. Arrange the apples, onions and garlic around roast; sprinkle with rosemary.
Bake, uncovered, at 350° for 45 -60 minutes or until a thermometer reads 145°, turning the apples, onions and garlic once. Let meat stand for 10 minutes before slicing. Yield: 8 servings.