Meatloaf

INGREDIENTS:

4 slices white bread, torn into pieces
2 1/2 pounds ground beef
1 medium yellow onion, peeled and cut into eighths
2 cloves garlic
2 stalks celery, cut into 2-inch pieces
5 button mushrooms
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

DIRECTIONS:

1. Heat oven to 375 degrees. Place bread in the bowl of a food processor fitted with the steel blade; pulse until fine crumbs form. Transfer to a medium bowl, and add ground beef.

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2. Place onion, garlic, celery, mushrooms, and parsley in the bowl of a food processor fitted with the steel blade; pulse until fine. Add to meat mixture, using hands to mix well. Add egg, 1/2 cup ketchup, 2 teaspoons yellow 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.
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3. Combine remaining 1/2 cup ketchup, remaining teaspoon yellow mustard, and brown sugar in a bowl; stir until smooth.
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4. 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, about 80 minutes. If top gets too dark, cover with foil, and continue baking.