Pat pork roast dry with paper towels. Sprinkle or rub roast with salt and pepper.
Heat oil in a large heavy skillet over medium-high heat. Brown pork roast on all sides, about 5 minutes total. Place roast on a rack in a lightly greased roasting pan.
Combine mustard and 2 Tbsp. rosemary; spread onto browned pork.
Bake, uncovered, at 350° for 45 to 55 minutes or until a thermometer inserted in center of roast registers 155°. Cover with aluminum foil, and let stand 10 minutes or until thermometer registers 160° before slicing. Serve with Autumn Fruit Compote.