1 hard-cooked egg, peeled and finely chopped (optional)
2 tablespoons mayonnaise
1 tablespoon fresh flat-leaf parsley, chopped
1/4 teaspoon kosher salt
1/8 teaspoon black pepper
8 slices white bread
How to Make It
In a small bowl, gently combine the tuna, relish, and egg (if using). Add the mayonnaise and parsley and combine. Season with the salt and pepper. Divide the salad among 4 slices of bread and sandwich with the remaining slices. Cut in half and serve.