1. Preheat the oven to 350°F.

2. In a large mixing bowl, combine ground beef, breadcrumbs, eggs, onion, ketchup, mustard, Worcestershire sauce, salt, and pepper.

3. Mix the ingredients until well combined.

4. Shape the mixture into a loaf and place it in a baking dish.

5. Bake for 1 hour or until fully cooked through.

6. Let it rest for 10 minutes before slicing and serving.