Turkey Meatball Garlic Bread Heroes

INGREDIENTS

• 1 (28-ounce) can whole tomatoes in purée
• 2 tablespoons olive oil
• 1 small onion, finely chopped
• 3 garlic cloves, minced
• 1 teaspoon sugar
• 1/2 teaspoon salt
• 3 cups coarse fresh bread crumbs (from 5 to 6 slices firm white sandwich bread)
• 2/3 cup whole milk
• 2 large eggs, lightly beaten
• 1 1/4 cups grated Pecorino Romano (about 5 ounces)
• 3 tablespoons finely chopped flat-leaf parsley
• 1/2 teaspoon dried oregano
• 2 pounds ground turkey (not breast meat)
• 5 tablespoons unsalted butter, softened
• 1 tablespoon minced garlic
• 1/4 teaspoon salt
• 2 tablespoons grated Pecorino Romano
• 2 tablespoons finely chopped flat-leaf parsley
• 1/4 teaspoon freshly ground black pepper
• 12 hot dog or long potato buns or hoagie rolls
• An instant-read thermometer