01 -
Place frozen beef meatballs in a single layer at the bottom of a 4-6 quart slow cooker.
02 -
Pour the can of low sodium French onion soup over the meatballs. Sprinkle the French onion soup mix evenly on top.
03 -
Pour in 1 cup of low sodium beef broth. Cover and cook on high for 2-3 hours or on low for 5-6 hours until meatballs are heated through and flavors meld.
04 -
If a thicker gravy is desired, mix corn starch and water in a small bowl to create a slurry, stir into the slow cooker, cover, and cook for an additional 10 minutes.
05 -
Sprinkle shredded mozzarella cheese evenly over the meatballs and cover. Cook until the cheese has melted.
06 -
Optionally, garnish with fresh thyme or parsley before serving. Serve over mashed potatoes or egg noodles with a side of green beans.