This recipe started from one in Diet for a Small Planet by Frances Moore Lappe, a book I highly recommend to anyone who's concerned that a vegetarian diet can't give them enough protein. She focuses on getting multiple sources of vegetarian protein into one meal, in this case peas, peanuts, whole wheat, and yogurt. My modification is more convenient but still delicious, with plenty of protein and vitamins. Our son has loved Red & Green Pockets since he was a toddler!