Preheat your oven to 350°F.
In a large mixing bowl, combine the ground beef, Lipton onion soup mix, breadcrumbs, milk, ketchup, eggs, Worcestershire sauce, garlic powder, and black pepper.
Mix until just combined; avoid overmixing to keep the meatloaf tender.
Transfer the mixture to a loaf pan and shape it into a loaf.
Bake in the preheated oven for 1 hour, or until the internal temperature reaches 160°F.
Let the meatloaf rest for 10 minutes before slicing.
Serve with your favorite sides, such as mashed potatoes or green beans.