1. In a large pot, cook ground beef over medium heat until browned. Add diced onion and garlic, cooking until softened (about 3 minutes). Drain any excess grease.
2. Stir in beef broth, diced tomatoes, tomato sauce, Italian seasoning, garlic powder, salt, and pepper. Bring to a boil, then reduce heat and simmer for 10 minutes.
3. Add the tortellini to the pot and cook according to package directions, typically 5-7 minutes, until tender.
4. Stir in chopped parsley and adjust seasoning if needed.
5. Serve hot and enjoy the cozy flavors!