Ingredients

• 4 slices white bread, torn into pieces
• 2 1/2 pounds ground beef
• 1 medium yellow onion, peeled and cut into 1/8's
• 2 cloves garlic
• 2 stalks celery, cut into 2-inch pieces
• 2 carrots, peeled and cut into 2-inch pieces
• 1/2 cup flat-leaf parsley leaves
• 1 large egg
• 1 cup ketchup
• 3 teaspoons dry mustard
• 1 tablespoon coarse salt
• 2 teaspoons freshly ground black pepper
• 2 tablespoons brown sugar

Instructions

1. Heat oven to 375 degrees F.
2. Place bread in the bowl of a food processor fitted with a steel blade; pulse until fine crumbs form. Transfer to a medium bowl, and add ground beef.
3. Place onion, garlic, celery, carrots, and parsley in the bowl of a food processor fitted with a steel blade; pulse until fine. Add to meat mixture, using hands to mix well. Add egg, 1/2 cup ketchup, 2 teaspoons dry mustard, salt, and pepper; use hands to combine thoroughly. Place in an 8 1/2 by 4 1/2 by 2 1/2-inch loaf pan.
4. Combine remaining 1/2 cup ketchup, remaining teaspoon dry mustard, and brown sugar in a bowl; stir until smooth.
5. Brush mixture over meatloaf; place in the oven with a baking pan set on the rack below to catch drippings. Cook until a meat thermometer inserted in the center reads 160 degrees F about 90 minutes. If top gets too dark, cover with foil, and continue baking.