Flaky tuna salad with crunchy celery on soft bread delivers a high protein, omega-rich lunch. This healthy, family-friendly sandwich is a smart choice for clean eats and meal prep.
In a medium mixing bowl, combine drained canned tuna, celery, and red onion.
Add mayonnaise, Dijon mustard, and fresh lemon juice to the bowl. Stir until thoroughly mixed.
Season the tuna salad with salt and black pepper, adjusting to taste for optimal flavor balance.
Lay out 8 slices of bread. Place a lettuce leaf on 4 of the slices for added crunch and moisture barrier.
Spoon an even portion of the tuna salad onto the lettuce-lined bread slices, top with remaining bread, and gently press. Serve immediately or wrap for meal prep.