Meatballs with Eggplants

Name: Meatballs with Eggplants
Ingredients: ¼ cup extra virgin olive oil; 2 medium onions, chopped; Four 28 ounce cans Italian plum tomatoes, preferably San Marzano, passed through a food mill; 2 teaspoons kosher salt; 3 fresh bay leaves; ½ teaspoons crushed red pepper flakes; ¾ cup extra virgin olive oil; 2 medium eggplants (about 1 ¼ pounds), peeled and cut into ½-inch cubes; 2 2/1 pounds ground beef; 1 pound sweet Italian sausage, removed from casings; 2 cups fine dried breadcrumbs; ½ cup chopped fresh Italian parsley; ½ cup freshly grated Grana Padano; 2 large eggs