Season your beef with salt and pepper. In a skillet over medium high heat, add a little oil and sear your stew beef in small batches. Transfer to slow cooker.
Add chopped onions to hot pan and let cooking stirring regularly for about 3-4 minutes. Add broth into pan and scrape up any brown bits from bottom of pan. Poor all in slow cooker.
Add thyme, bay leaves, worcestershire sauce, hot sauce, tomatoes and cabbage.
Cover and cook on low for 8 hours or on high for 4-6 hours. 30 minutes before you are ready to eat stir in zuchini.
Cook your pasta in salted water, drain and set aside.
Remove bay leaves and any thyme sprigs from soup. Ladle into bowls, add a small scoop of cooked noodles. Top with fresh parsley and parmesan cheese.