Prepare your ingredients by chopping the onion, garlic, carrots, and celery, and quartering the potatoes.
Sear the beef in a Dutch Oven with olive oil, seasoning with salt and pepper, and sprinkle flour over the beef while browning.
Sauté the vegetables in the same pot, adding thyme, smoked paprika, onions, garlic, carrots, and celery until the onions are translucent.
Add apple vinegar and let it cook down for about 4-5 minutes, then add Worcestershire sauce and tomato paste, stirring until combined.
Combine everything by adding tomato sauce and beef stock followed by the quartered potatoes, stirring gently.
Cover the pot and place it in an oven preheated to 325°F (160°C) and let it simmer for about 3 hours.
If using, add green beans during the last 30 minutes of cooking.