Question: how long to cook frozen chuck roast?
Answer: Place the potatoes, onions, carrots and garlic in the bottom of a slow cooker, and then add the frozen roast on top (fat side up if it has one). In a bowl, combine the soups and the soup mix. Pour over top the roast, spreading to cover the exposed sides. Set the slow cooker on low, then cover and cook for 8-10 hours.