For meatloaf: Mix beef, bread crumbs, milk, onion, parsley, parmesan, beaten egg and salt in large bowl. Shape into 4 patties.
Heat oil in large nonstick skillet over medium heat. Add patties and cook until browned, 5-6 minutes per side. Pour sauce around patties, bring to boil. Reduce heat and simmer, covered, spooning sauce occasionally over patties, until instant-read thermometer inserted into center of each patty registers 160 degrees, 10-15 minutes.
Top meat loaves evenly with mozzarella. Cover and cook until cheese melts, about 30 seconds.
8 WW Points Plus Value per serving
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