You can use leftover cooked chicken or rotisserie chicken for this recipe if you have some on hand. If not, poach chicken breasts in a gentle simmer for about 8 minutes, or until it reaches an internal temperature of 165 degrees. Alternately, you can cook chicken breasts quickly in the Instant Pot. The chicken can be chopped or shredded to make this cranberry walnut chicken salad. I prefer to chop it into bite sized pieces.