Place the beef stew meat, cubed potatoes, diced onion, and minced garlic into the slow cooker.
Pour the crushed tomatoes and beef broth over the meat and vegetables.
Sprinkle in the Italian seasoning, salt, and black pepper.
Stir everything together until the ingredients are evenly combined.
Cover and cook on low for 8 hours, until the beef is tender and the potatoes are soft.
Stir once more before serving to distribute the sauce.