01 -
In a large mixing bowl, thoroughly combine ground beef, breadcrumbs, Parmesan cheese, egg, garlic powder, chopped onion, salt, and black pepper until evenly incorporated.
02 -
Shape the mixture into uniform meatballs, each approximately 1 inch in diameter, and arrange them evenly.
03 -
Transfer the meatballs to the crock pot, spacing them in a single layer. Pour the French onion soup evenly over the meatballs.
04 -
Secure the crock pot lid and cook on low for 6 to 8 hours, or on high for 3 to 4 hours, until the meatballs are thoroughly cooked.
05 -
In the final 30 minutes of cooking, evenly sprinkle shredded mozzarella cheese over the meatballs. Re-cover and continue to cook until the cheese melts.
06 -
Ladle meatballs with sauce onto serving plates and serve hot.