Classic Meatloaf

Name: Classic Meatloaf
Ingredients: 3 thick slices white bread, torn into large pieces; 2 garlic cloves, chopped; 1 medium onion, chopped; 1 celery stalk, chopped; 1 medium carrot, chopped; ½ cup flat-leaf parsley; 12 ounces ground beef chuck (90 percent lean), preferably pasture-raised; 12 ounces ground pork, preferably pasture-raised; 12 ounces ground veal, preferably milk-fed; 1 large egg; ¾ cup ketchup, divided; 1 tablespoon Dijon mustard; 1 tablespoon Worcestershire sauce; Coarse salt and freshly ground pepper; 2 tablespoons light-brown sugar