Brown ground beef and chopped onion in a large pot until beef is cooked through. Drain excess fat.
Add cabbage, carrots, celery, and diced tomatoes to the pot.
Pour in beef broth and season with garlic powder, paprika, salt, and pepper.
Bring to a boil, then reduce heat and simmer for 30 minutes until vegetables are tender.
Garnish with fresh parsley before serving.
