Pollo encacahuatado is a traditional Mexican recipe that features chicken in a spicy peanut sauce. Make your own at home with this recipe for Encacahuatado Spicy Peanut Sauce with Chicken. The encacahuatado sauce is made using a mixture guajillo chilies and chipotle chilies. Boiled and then pureed, the peppers are added to a mixture of pureed tomatoes, chopped peanuts, onion, garlic and cinnamon to make a thick savory sauce for the chicken. Use chicken leg or thighs for this recipe.