Directions Fill a large pot three-quarters full of water and bring to a boil.
Add the pasta and cook until al dente, about 10 minutes, or according to package directions. After the pasta has cooked for 3 minutes, remove 1 cup of the cooking water. In a large frying pan over high heat, bring the reserved cooking water, onion, bell pepper, carrots, Cajun seasoning, cumin and cayenne to a boil. Reduce heat to low and stir in the beans, lemon juice and oregano. Drain the pasta thoroughly.