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Home » Recipes for One » Lunch for One

Classic Tuna Melt for One

by Allison Campbell · Last updated Feb 10, 2026 · This post may contain affiliate links · Leave a Comment

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Remember cozy diner days when the air smelled faintly of buttered toast and sizzling cheese? It may have been the magic of the tuna melt. 🙂 This single-serve version brings that feel-good nostalgia right into your kitchen, but with fresh, simple ingredients and a golden crust that would make any short-order cook proud.

A grilled tuna melt sandwich with melted cheese, tomato slices and tuna salad between toasted bread, stacked on a white plate.

Tuna melts are one of those humble meals that quietly deliver joy IMHO. They're easy, use ingredients you probably already have, and somehow feel both casual and special at the same time.

What makes this single-serve tuna melt recipe so good? My personal secret sauce is adding some crunchy chopped veggies and fresh lemon juice into the tuna mixture for a refreshing twist. It's the same recipe I use for my simple tuna salad and the combo just works so well once you add the tomato and melted cheese. And if you've ever been disappointed by a soggy tuna melt, stick around; I'm solving that once and for all.

🌿 Ingredients

Top-down view of labeled ingredients for a tuna sandwich, including bread, American cheese, canned tuna, tomato, red pepper, butter, mayonnaise, celery, red onion, garlic powder, salt, pepper, and lemon juice.

I love using multi-grain or sourdough bread for my tuna melt, but as long as the bread you choose is fairly hearty, you're good. American cheese works best for maximum melty-ness, but feel free to use sliced cheddar instead if you'd prefer!

Also, no worries if you don't have one or more of the chopped veggies on hand. I love them all because of the freshness they bring to this sandwich, but it would still be delicious without one or two.

See recipe card below for exact quantities.

✔️ Tips for success

Okay as promised, there are two tips I swear by to avoid a mushy tuna melt.

Pro tip #1: Make sure you drain the tuna well before you add it, because no one likes soggy sandwiches! I use the tops of the cans to press down on the tuna in order to drain it well.

Pro tip #2: Make sure your tuna salad is not too mushy from adding too much mayo. It should be a little flaky and chunky still to avoid a soggy sandwich situation here as well.

📝 Instructions

A glass bowl containing chunks of tuna, chopped celery, chopped red bell pepper, diced red onion, mayonnaise, lemon juice and spices on a white marble surface.
Place all of the tuna salad ingredients into a mixing bowl.
A glass bowl filled with a creamy mixture of tuna, chopped red and green vegetables, and a spoon resting inside the bowl, placed on a white marble surface.
Give everything a good mix until things are sticking together.
Two slices of whole grain bread with butter spread evenly on top, placed on a sheet of parchment paper.
Spread the butter on one side of each slice of bread and them flip them over.
A slice of bread topped with American cheese, tomato slices, and a creamy tuna salad with a second bread slice next to it, ready to close the sandwich.
Layer on the cheese, tomato slices and an even layer of tuna salad.
A tuna melt sandwich ready for grilling, placed on parchment paper.
Close the sandwich with the other slice of bread, butter side up.
A prepared tuna melt sandwich in a stainless steel pan with cheese, tomato slices and tuna salad between slices of buttered bread.
Warm a medium skillet and add the sandwich, cheese side toward the bottom.
A grilled tuna melt with melted cheese, tomato slices and tuna salad sits in a stainless steel frying pan. The bread is golden brown and crispy.
Cook for 3-4 minutes per side until golden.
A grilled tuna melt sandwich cut in half on a white cutting board, showing golden-brown toasted bread and melted cheese and sliced tomatoes.
Carefully remove your sandwich from the skillet, slice in half and enjoy!

🥧 Serving suggestions

This sandwich is delicious and filling all on it's own, but if you'd like to make it into more of a meal, I love serving it with tomato soup and a real dill pickle or some homemade fermented carrot sticks.

🍳 Recipe

A close-up of a tuna melt sandwich with toasted bread, melted cheese, tomato slices and tuna salad, placed on a white plate.

Classic Tuna Melt for One

Allison Campbell
No ratings yet
This easy single-serve tuna melt recipe is crispy, cheesy and perfectly golden. Learn how to make this melty diner-style favorite at home.
Pin Recipe Print Recipe Start Cooking
Prep Time 10 minutes mins
Cook Time 10 minutes mins
Total Time 20 minutes mins
Servings: 1
Course: Lunch
Cuisine: American
Calories: 601
Ingredients Equipment Method Nutrition Notes
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Ingredients
  

For the tuna salad:
  • 2 tablespoons celery finely chopped
  • 1 tablespoon red bell pepper finely chopped
  • 1 tablespoon red onion finely diced
  • ½ can tuna 5 ounces each
  • 1 tablespoon mayonnaise or more, to taste
  • squeeze fresh lemon juice
  • pinch garlic powder
  • sea salt to taste
  • freshly ground black pepper to taste
For the sandwich:
  • ½ medium tomato sliced
  • 2 slices whole-grain bread or sourdough
  • 1 tablespoons unsalted butter
  • 2 slices American cheese or cheddar

Equipment

  • cutting board
  • chef's knife
  • mixing bowl
  • medium skillet
  • metal spatula

Method
 

  1. Finely chop the celery and red pepper, finely dice the onion, and drain the tuna well. Then, in a medium bowl, mix all of the tuna salad ingredients together, only adding as much mayo as you need to hold the mixture together so that your tuna melts don't get soggy. (It should have some good texture to it rather than being mushy.) Finally, slice the tomatoes.
    2 tablespoons celery, 1 tablespoon red bell pepper, 1 tablespoon red onion, ½ can tuna, 1 tablespoon mayonnaise, squeeze fresh lemon juice, pinch garlic powder, sea salt, freshly ground black pepper, ½ medium tomato
  2. Spread a good layer of butter on one side of each slice of bread and then flip them over. Layer enough cheese to cover one slice, followed by the tomato slices and tuna spread evenly across the sandwich, and then close it with the second slice of bread butter side up.
    2 slices whole-grain bread, 1 tablespoons unsalted butter, 2 slices American cheese
  3. Warm a skillet over medium heat, add the sandwich cheese-side toward the bottom and cook until golden and crisp, about 3-4 minutes per side (check in after about 2-3 minutes to make sure it doesn't brown too fast.) Press gently with a spatula on each side to help the cheese melt evenly.
  4. Slice in half and enjoy immediately.

Nutrition

Calories: 601kcalCarbohydrates: 33gProtein: 31gFat: 39gSaturated Fat: 17gPolyunsaturated Fat: 8gMonounsaturated Fat: 9gCholesterol: 109mgSodium: 1260mgPotassium: 512mgFiber: 4gSugar: 7gVitamin A: 1681IUVitamin C: 22mgCalcium: 544mgIron: 4mg

Notes

Gluten-free: Substitute your favorite whole-grain gluten-free bread.
Meal prep: Make the tuna mixture ahead of time and assemble sandwich just before serving.
Storage: This tuna melt sandwich is best eaten fresh, but you can refrigerate tuna filling (not assembled sandwich) for up to 5 days.

Did you make this recipe?

I'd absolutely love for you to leave a review!
A classic tuna melt sandwich with layers of tuna salad, American cheese, tomato, and tuna salad between two slices of toasted bread, served on a white plate. Text reads: Classic Tuna Melt - crispy, cheesy & irresistible.
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Classic Tuna Melt for One

Classic Tuna Melt for One

Ingredients

For the tuna salad:
  • 2 tablespoons celery (finely chopped)
  • 1 tablespoon red bell pepper (finely chopped)
  • 1 tablespoon red onion (finely diced)
  • ½ can tuna (5 ounces each)
  • 1 tablespoon mayonnaise (or more, to taste)
  • squeeze fresh lemon juice
  • pinch garlic powder
  • sea salt (to taste)
  • freshly ground black pepper (to taste)
For the sandwich:
  • ½ medium tomato (sliced)
  • 2 slices whole-grain bread (or sourdough)
  • 1 tablespoons unsalted butter
  • 2 slices American cheese (or cheddar)

Equipment

  • cutting board
  • chef's knife
  • mixing bowl
  • medium skillet
  • metal spatula
  • 2 tablespoons celery (finely chopped)
  • 1 tablespoon red bell pepper (finely chopped)
  • 1 tablespoon red onion (finely diced)
  • ½ can tuna (5 ounces each)
  • 1 tablespoon mayonnaise (or more, to taste)
  • squeeze fresh lemon juice
  • pinch garlic powder
  • sea salt (to taste)
  • freshly ground black pepper (to taste)
  • ½ medium tomato (sliced)
1
Finely chop the celery and red pepper, finely dice the onion, and drain the tuna well. Then, in a medium bowl, mix all of the tuna salad ingredients together, only adding as much mayo as you need to hold the mixture together so that your tuna melts don't get soggy. (It should have some good texture to it rather than being mushy.) Finally, slice the tomatoes.
  • 2 slices whole-grain bread (or sourdough)
  • 1 tablespoons unsalted butter
  • 2 slices American cheese (or cheddar)
2
Spread a good layer of butter on one side of each slice of bread and then flip them over. Layer enough cheese to cover one slice, followed by the tomato slices and tuna spread evenly across the sandwich, and then close it with the second slice of bread butter side up.
3
Warm a skillet over medium heat, add the sandwich cheese-side toward the bottom and cook until golden and crisp, about 3–4 minutes per side (check in after about 2-3 minutes to make sure it doesn't brown too fast.) Press gently with a spatula on each side to help the cheese melt evenly.
4
Slice in half and enjoy immediately.

Hope you enjoyed cooking this recipe!

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