Meatball Hero Sandwiches

Preheat oven to 350°F (175°C) . Grease heavy large baking sheet. Combine ground beef, Parmesan cheese, eggs, parsley, bread crumbs, garlic, oregano, pepper and salt in large bowl and blend thoroughly. Using moistened hands, shape meat mixture into 1 1/2-inch rounds and place on prepared baking sheet, spacing evenly. Bake meatballs until just firm to touch and cooked through, about 20 minutes. Bring marinara sauce to simmer in heavy large saucepan. Add meatballs to sauce and simmer about 15 minutes. Gently press center of bottoms of rolls to compact slightly. Spoon 5 or 6 meatballs into depression in each roll. Spoon enough sauce over to coat. Place tops of rolls on and serve.