This recipe is MUCH simpler than it sounds! It's very tasty and light. Originally, I came across this recipe on the WCHS NEWS web site, on which they said it was from a book by Bridgett Swinney (Copyright 1993 by Fall Rivers Press) called Eating Expectantly: The Essential Eating Guide and Cookbook For Pregnancy. It also doubles as a low-fat and generally healthy-eating recipe. I made some adjustments to the recipe myself, but I will post the original recipe and add my own personal suggestions here. I added 1/3 c. minced bell pepper, and 1/2 small jalapeño pepper, minced. I'd also recommend reducing the cooking time for the tortillas to 8 minutes per side, mine over-baked at 20 minutes. Also, I wouldn't personally recommend using the yogurt sauce as a dip for the tortillas, it's too spicy because of the cumin. It is VERY good as a dressing on the salad, though. I also served each with 4 eighths tomato instead of 2 quarters. The jalapeño won't add much (if any) heat, but it seems to eliminate or at least reduce the gastric distress suffered during the digestion of beans. Might as well stop a problem before it starts :)