1Creado con IA
Drain the canned tuna and place it in a medium-sized mixing bowl.
Finely chop the celery and red onion, then add them to the bowl with the tuna.
Add the mayonnaise, lemon juice, and dijon mustard to the bowl.
Season the mixture with salt and pepper to taste.
Mix all the ingredients together until well combined.
Lay out the slices of bread and place a lettuce leaf on two of the slices.
Divide the tuna salad evenly and spread it over the lettuce leaves on the bread.
Top the tuna with the remaining slices of bread to form sandwiches.
Cut the sandwiches in half, if desired, and serve immediately.