01 -
In a large bowl, combine ground beef, breadcrumbs, grated Parmesan, egg, finely chopped onion, garlic powder, salt, and black pepper. Mix thoroughly to distribute ingredients evenly.
02 -
Shape the mixture into meatballs of uniform size to ensure even cooking.
03 -
Place the formed meatballs evenly in the crockpot base.
04 -
In a separate bowl, combine beef broth with French onion soup mix until well blended.
05 -
Pour the broth mixture over the meatballs, cover, and cook on low heat for 6 to 8 hours or on high heat for 3 to 4 hours.
06 -
Sprinkle shredded mozzarella cheese over the cooked meatballs and cook uncovered for an additional 15 minutes until the cheese has melted.