Yummy Mummy Meatloaf

Heat the oven to 350 °F. Lightly oil a 10 x 13-inch (or 10-inch round) baking dish. Combine the meat, egg, onion, milk, breadcrumbs, salt, and pepper in a large bowl. Shape the mixture into a 10-inch round dome and place it in the baking dish. Mix the 1/3 cup ketchup, 2 tablespoons brown sugar, and 2 tablespoons prepared mustard in a small bowl until blended. Spread the mixture over the meatloaf. Bake for 1 hour. Transfer the meatloaf to a wire rack and let rest for 20 minutes. Cook the pappardelle according to the package directions; drain and keep warm while meatloaf rests.