Heat the olive oil in a large skillet over medium heat. Add the beef stew meat and brown it on all sides for about 5 minutes. Transfer the meat to the slow cooker.
Add the cubed potatoes, sliced carrots, diced onion, and minced garlic to the slow cooker.
Pour in the crushed tomatoes and beef broth. Sprinkle the Italian seasoning, salt, and black pepper over the top.
Stir everything together gently to combine. Cover and cook on low for 8 hours.
Before serving, taste and adjust salt if needed. Sprinkle fresh parsley on each bowl.