1 cup freshly grated breadcrumbs from day-old Italian bread 1⁄3 cup whole milk11⁄2 lb (80/20 ground chuck)1⁄2 lb ground pork2 extra-large eggs, slightly beaten1⁄2 cup freshly grated Pecorino Romano cheese 3 cloves garlic, minced1 tsp kosher salt1⁄2 tsp freshly ground black pepper1⁄2 cup chopped fresh parsley1⁄2 cup sliced onion1 batch Marinara Sauce #meatballsub #familyrecipe