- Combine ingredients for meatballs in a medium mixing bowl and mix thoroughly. Form into 20 meatballs.
- Heat oil in a large pot over medium heat. Once oil is hot, add meatballs and cook for 5 minutes, rotating often for even browning. Set meatballs aside on a plate.
- Add ginger, garlic and onion to pot and sauté for 3 minutes, stirring regularly.
- Add beef stock and 2 tablespoons of the spicy miso sauce to pot and bring to a boil. Add meatballs back to pot and reduce heat to simmer. Simmer for 15 minutes, until meatballs are cooked through. Taste and salt if desired.
- While soup simmers, cook noodles according to package directions. Divide cooked noodles between bowls and ladle hot soup into bowls. Serve topped with cilantro and basil.