Add the meatballs, onion, broth, steak sauce, and condensed soup to the cooker.
Cover and cook on low for 6 hours or on high for 4 hours.
When ready to serve, fold in the sour cream and the egg noodles - gently working the mixture together before serving.
Notes
Keep leftovers in an airtight container in the refrigerator for up to 4 days.You can use homemade meatballs for this recipe. You’ll need to cook them prior to adding them to the slow cooker. Please do not add raw meatballs to the pot.Serve over mashed potatoes if you would like to omit the egg noodles.