Chef john’s italian meatballs

Cutlets and meatballs

⅓ cup plain bread crumbs ½ cup milk 2 tablespoons olive oil 1 onion, diced 1 pound ground beef 1 pound ground pork 2 eggs ¼ bunch fresh parsley, chopped 3 cloves garlic, crushed 2 teaspoons salt 1 teaspoon ground black pepper ½ teaspoon red pepper flakes 1 teaspoon dried Italian herb seasoning 2 tablespoons grated Parmesan cheese