1 (6 ounce) can tuna in water, drained
1/2 cup chopped red apple
1/3 cup fat-free mayonnaise
1/4 cup finely chopped celery
1/4 cup finely chopped walnuts
2 tablespoons finely chopped onion
1 tablespoon sweet pickle relish
1 teaspoon sugar
1/4 teaspoon salt
6 slices reduced-calorie bread, toasted
6 leaves lettuce
In a bowl, combine the first nine ingredients.
Spread 1/2 cup on three slices of bread. Top with lettuce and remaining bread.