In a large bowl, combine the chicken, cranberries, mayonnaise, walnuts, scallions, curry powder and apple and mix to thoroughly combine.
Cut the crusts from the bread and set aside for another purpose.
Using 2 slices of the bread, make a sandwich, taking care to spread the chicken salad in an even layer all the way to the edges of the bread. With a large serrated knife, cut the sandwich diagonally in both directions to create 4 equal triangles. Repeat with the remaining bread and salad to make 16 tea sandwiches.