Leftover Blue Cheese Chicken Salad Sandwich is a delicious and easy way to repurpose leftover chicken. The salad is made with cooked chicken, blue cheese, mayonnaise, celery, and seasonings, creating a creamy and flavorful filling. It is then spread onto bread slices and topped with lettuce and tomato for a satisfying sandwich. The combination of the tangy blue cheese, tender chicken, and crunchy vegetables makes this sandwich a delightful lunch or light dinner option.