Brown The Beef: In a big pot, warm up the olive oil over medium-high heat. Add the beef stew meat and heat for about 5 minutes, or until browned on all sides. After taking the steak out of the pot, set it aside.
Sauté The Aromatics: In the same pot, add diced onion and minced garlic. Sauté until fragrant, about 2 minutes.
Add Vegetables: Add sliced carrots, celery, and diced potatoes to the pot. Cook for a another five minutes, stirring now and then.
Combine Ingredients: Return the browned beef to the pot. Pour in diced tomatoes and beef broth. Season with dried thyme, dried oregano, salt, and pepper.
Simmer: After bringing the soup to a boil, turn down the heat. Cover and simmer for 1 hour, or until the beef is tender and the vegetables are cooked through.
Serve: Ladle the hot soup into bowls. Garnish with fresh chopped parsley, if desired. Serve hot and enjoy!