Beki Cook of West St. Paul sent in this recipe. To squeeze in more nutrition, Cook uses multigrain Barilla Plus spaghetti, which has omega-3s and an assortment of high-fiber ingredients. Sometimes, she adds crumbled feta cheese and/or a seeded and finely diced jalapeno to the mix. The recipe makes four generous servings. If you're planning on leftovers, the avocado should be added at the time of serving, says Cook, who is married to the Pioneer Press deputy photo director. "It does not keep."