Tender chicken salad with crisp celery and creamy dressing on soft bread is a high protein, family-favorite lunch. This versatile chicken sandwich is perfect for picnics, meal prep, and quick weekday meals.
Dice the cooked chicken breast into small, bite-sized pieces for even mixing.
Finely chop the celery stalks and red onion; add them to a large mixing bowl with the chicken.
In a separate small bowl, whisk together mayonnaise, Dijon mustard, lemon juice, salt, and black pepper until the dressing is well blended.
Pour the dressing over the chicken mixture and gently mix until all ingredients are evenly coated and creamy. Chill for at least 20 minutes for best flavor.
To assemble, lay down lettuce leaves on four slices of bread, top with chicken salad, and finish with remaining bread slices. Serve immediately or wrap for later.