Slow Cooker Salisbury Steak Meatballs – meatballs cooked with onions and mushrooms in a delicious savory sauce! All cooked in the slow cooker and it starts with frozen meatballs to make it even easier. Such a great weeknight dinner!

Add butter, tomato paste, beef broth, and salt to the slow cooker and stir to combine.
Add sliced onions, mushrooms, and meatballs and toss to combine everything.
Cook on high for 4 hours (or low for 7 - 8 hours)
After the 4 hours is up, whisk together cornstarch and cold water in a separate bowl
Stir the cornstarch mixture into the meatballs and stir
If your slow cooker has a sauté function, turn it on and let it cook until the sauce thickens, only a couple minutes
If your slow cooker doesn't have a sauté function, continue to let it cook on high for about 10 minutes, until the sauce has thickened
Serve hot with fresh parsley sprinkled on top
Ingredients
Directions
Add butter, tomato paste, beef broth, and salt to the slow cooker and stir to combine.
Add sliced onions, mushrooms, and meatballs and toss to combine everything.
Cook on high for 4 hours (or low for 7 - 8 hours)
After the 4 hours is up, whisk together cornstarch and cold water in a separate bowl
Stir the cornstarch mixture into the meatballs and stir
If your slow cooker has a sauté function, turn it on and let it cook until the sauce thickens, only a couple minutes
If your slow cooker doesn't have a sauté function, continue to let it cook on high for about 10 minutes, until the sauce has thickened
Serve hot with fresh parsley sprinkled on top