- Brown beef and onion in large skillet over medium-high heat, about 5 minutes.
- Stir in tomatoes, soy sauce, chili powder and 1-1/2 cups water. Bring to boil; reduce heat and simmer, covered, 5 minutes.
- Stir in macaroni; cover and simmer 10 to 12 minutes, or until macaroni is tender, yet firm, stirring once.
- Sprinkle with cilantro before serving.