apple tuna sandwiches

Ingredients For apple tuna sandwiches

• 1/3 c

  fat-free mayonnaise (or your favorite)
• 1/4 c

  finely chopped celery
• 1/4 c

  finely chopped walnuts
• 2 Tbsp

  finely chopped onion
• 1 Tbsp

  sweet pickle relish
• 1 tsp

  sugar
• 1

  pouch (7.1 ounces) light water-packed tuna
• 1/2 c

  chopped red apple
• 6 slice

  reduced-calorie bread, toasted
• 6

  lettuce leaves