In a large pot, brown the ground beef over medium heat, breaking it apart with a wooden spoon until no longer pink.
Add the diced onion and minced garlic to the pot, stirring frequently until the onion becomes translucent.
Stir in the diced carrots and potatoes, letting them cook for a few minutes.
Incorporate the undrained diced tomatoes, beef broth, Worcestershire sauce, and thyme into the pot.
Season with salt and pepper, then bring the mixture to a boil. Reduce heat and let it simmer for about 30 minutes, or until the vegetables are tender.
Taste and adjust seasoning if necessary, then serve your hamburger stew hot in bowls, garnished with fresh herbs if desired.