Enjoy the perfect blend of savory tuna, creamy mayonnaise, a zing of Dijon, and the crispness of fresh celery and red onion, all melted together with cheddar atop toasted bread. This tuna melt recipe is a quick, satisfying classic that brings a delightful crunch with every bite, especially when paired with the tangy bite of dill pickles. It’s an easy-to-make comfort food that’s ideal for a lunchtime pick-me-up or a cozy dinner that will leave you and your family smiling.