Place frozen meatballs in the bottom of the slow cooker and pour over the jar of spaghetti sauce, covering completely.
Mix in 1 tablespoon of minced garlic and 1/2 cup of chopped white onions.
Set the slow cooker for low heat and cook for 6-8 hours (or high heat for 4-5 hours).
Remove and serve over rice.
Nutrition is an automatic estimate and will vary with the brands you use.
Recipe from https://fastandslowcooking.com/slow-cooker-frozen-meatballs/