Prep: Preheat oven to 350°F (175°C). Optional: Line loaf pan with foil for easy lifting and cleanup.

Mix Sauce: In a small bowl, combine the ketchup, brown sugar, and Worcestershire sauce. Stir well and set aside.

Mix Meatloaf: In a large bowl, crumble in ground beef. Sprinkle breadcrumbs and grated onion over the top. In a separate medium bowl, whisk together the beef broth, beaten egg, tomato paste, Worcestershire sauce, salt, garlic powder, ground sage, and black pepper. Pour the wet mixture over the beef and breadcrumb mixture. Mix thoroughly by hand until just combined.

Assemble: Spoon a few tablespoons of the sauce into the bottom of the loaf pan. Add the meatloaf mixture, pressing to shape it firmly into the pan. Top evenly with the remaining sauce.

Bake: Bake uncovered for 60 minutes or until internal temperature reaches 160°F. Check for doneness at 45 minutes and note temperature at that time.

Rest and Serve: Remove from oven and let rest for 5–10 minutes before slicing.