01 -
Spray the slow cooker insert with nonstick cooking spray to prevent sticking.
02 -
Place the frozen meatballs directly into the prepared slow cooker.
03 -
In a mixing bowl, whisk together the beef broth, brown gravy mix, onion soup mix, ketchup, and Worcestershire sauce until smooth and well combined.
04 -
Pour the sauce mixture over the meatballs and gently stir to coat evenly. Cover with the lid and cook on LOW for 5-6 hours.
05 -
In a small bowl, whisk together the cornstarch and cold water to create a slurry. Stir this mixture into the slow cooker and continue cooking for an additional 10 minutes, or until the gravy reaches desired thickness.
06 -
Serve the meatballs and gravy over mashed potatoes or egg noodles. Garnish with chopped fresh parsley if desired.