20-Minute Tuna Melt

Some people shy away from tuna, but it really is a wonderful staple in so many recipes! This sandwich adds red onion, horseradish mustard and celery for a flavor combo that’s hard to beat.

  • Servings: 4 sandwiches
  • Prep Time: 15 minutes
  • Cook Time: 4-6 minutes per sandwich


  • 2 (5-ounce) cans tuna, drained
  • ½ small red onion, finely diced
  • ½ celery stalk, finely diced
  • 1 tablespoon minced fresh parsley
  • 3 tablespoons mayonnaise
  • 1 tablespoon horseradish mustard
  • 1 tablespoon olive oil
  • ½ teaspoon kosher salt
  • ½ teaspoon freshly ground black pepper
  • 8 slices sourdough bread 4 slices cheddar cheese 4 tablespoons (½ stick)
  • unsalted butter, softened


1. Place the tuna in a medium bowl and mash with a fork. Add the onion, celery, and parsley.
2. Add the mayonnaise, mustard, olive oil, salt, and pepper. Mix to combine.
3. Place two slices of bread on a clean work surface. Scoop 4 to 5 tablespoons of the tuna onto one slice of bread and top with
1 slice of cheese. Butter the second slice of bread and place on top.
4. In a medium skillet, melt ½ tablespoon of the butter over medium heat. Once the butter is sizzling, add the sandwich, butter-side up.
5. Cook for 2 to 3 minutes, until browned, then flip and cook on the second side for 2 to 3 minutes more, until browned.
6. Set the sandwich on a plate to cool slightly.
7. Repeat to make 3 more sandwiches. (You can also use a larger skillet and cook two sandwiches at a time.) Cut in half and serve.

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