1. In a large saucepan, cook the beef, onion and garlic over medium heat until beef is not longer pink; drain. Add the next seven ingredients; bring to a boil. Reduce heat; cover and simmer for 50 minutes.
2. Halve each tortilla and cut into 1/4 in. strips. Gently stir into soup; cover and simmer for 8-10 minutes or until tortillas are softened. Serve immediately. Yield: 6-8 servings (2-1/4 quarts).