A fantastic Southwestern variation on cold pasta salad!
Cook pasta until tender in salted water. Cool in strainer under cold water. Cook beans, onions and 1 ¾ cups water together for 5 minutes. Cool in strainer under cold water. Combine beans and pasta and set aside.
Combine all vegetables, seasonings, and 1 ½ cups water in a bowl and allow to soak (do not drain).Mix sour cream, mayonnaise, and barbecue sauce together and stir well. Combine all mixtures and stir well. Chill before serving.