This chuck roast stew is a comforting and hearty meal that is perfect for a cold day. Using a food processor, blend together onions, carrots, celery, and garlic until finely chopped. Sear the chuck roast in a hot skillet until browned on all sides. Transfer the roast to a slow cooker and add the chopped vegetables, beef broth, and potatoes. Cook on low for 8 hours. The result is a delicious and tender stew that will warm you up from the inside out.