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Home » Recipes » Sandwiches

Classic Tuna Melt (Crispy, Cheesy & Irresistible)

by Allison Campbell · Last updated Oct 31, 2025 · 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 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 come together fast, use ingredients you probably already have, and somehow feel both casual and special at the same time.

What makes my version stand out? 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; we're solving that once and for all.

If you can't get enough comfort food in your lunch life right now, you might also love my kimchi grilled cheese or egg salad sandwich.

🌿 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 tuna melts, 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.

📝 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.

Step 1: Chop your veggie add-ins if they aren't already and add all of the tuna salad ingredients into a mixing bowl. I like to keep the tuna somewhat chunky when I flake it into the bowl.

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.

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.

Step 2: Give everything a good mix until things are sticking together. Add a little extra mayo if needed, but don't go overboard.

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.

Two slices of whole grain bread with butter spread evenly on top, placed on a sheet of parchment paper.

Step 3: Then, build your sandwiches. Start by spreading a good layer of butter on one side of each slice of bread and them flip them all 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.

Step 4: For each sandwich, layer on enough cheese to cover the bread, a couple tomato slices, and finally an even layer of tuna salad.

A tuna melt sandwich ready for grilling, placed on parchment paper.

Step 5: Close each 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.

Step 6: Next, warm a large skillet over medium heat and add or more sandwiches with the cheese layer still 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.

Step 7: Cook for 2-3 minutes and check the undersides of the sandwiches to see if they're golden brown. If not, give them another minute or so and then flip to cook the other side. Pressing gently on each side to coax the cheese into full melt mode.

A grilled tuna melt sandwich cut in half on a white cutting board, showing golden-brown toasted bread and melted cheese and sliced tomatoes.

Step 8: Carefully remove your sandwiches from the skillet with a large spatula, 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 to serve it with tomato soup, real dill pickles or a simple green salad.

🍳 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 (Crispy, Cheesy & Irresistible)

Allison Campbell
No ratings yet
This classic tuna melt sandwich recipe is crispy, cheesy and perfectly golden. Learn how to make this melty diner-style favorite at home.
Print Recipe Pin Recipe
Prep Time 10 minutes mins
Cook Time 10 minutes mins
Total Time 20 minutes mins
Servings: 4
Course: Lunch
Cuisine: American
Calories: 630
Ingredients Equipment Method Nutrition Notes
Prevent your screen from going dark

Ingredients
  

For the tuna salad:
  • 1 rib celery finely chopped
  • 2 tablespoons red bell pepper finely chopped
  • 2 tablespoons red onion finely diced
  • 2 cans tuna 5 ounces each
  • ⅓ cup mayonnaise
  • 1 teaspoon fresh lemon juice
  • ¼ teaspoon garlic powder
  • sea salt to taste
  • freshly ground black pepper to taste
For the sandwiches:
  • 2 medium tomatoes sliced
  • 8 slices whole-grain bread or sourdough
  • 4 tablespoons unsalted butter
  • 8 slices American cheese or cheddar

Equipment

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

Method
 

  1. Make the filling: 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.
    1 rib celery, 2 tablespoons red bell pepper, 2 tablespoons red onion, 2 cans tuna, ⅓ cup mayonnaise, 1 teaspoon fresh lemon juice, ¼ teaspoon garlic powder, sea salt, freshly ground black pepper, 2 medium tomatoes
  2. Assemble: Lay out your bread slices, spread a good layer of butter on one side of each, and then flip them all over. On half of them, first layer enough cheese to cover the bread, followed by tomato slices and tuna spread evenly across the sandwich, and then close them with the second slice of bread butter side up.
    8 slices whole-grain bread, 4 tablespoons unsalted butter, 8 slices American cheese
  3. Cook: Warm a large skillet over medium heat, add one or more sandwiches cheese-side down 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. Enjoy: Slice in half and enjoy immediately.

Nutrition

Calories: 630kcalCarbohydrates: 32gProtein: 31gFat: 42gSaturated Fat: 18gPolyunsaturated Fat: 11gMonounsaturated Fat: 10gCholesterol: 111mgSodium: 1285mgPotassium: 483mgFiber: 3gSugar: 6gVitamin A: 1511IUVitamin C: 16mgCalcium: 541mgIron: 4mg

Notes

Gluten free: Substitute your favorite whole-grain gluten-free bread.
Meal prep: Make the tuna mixture ahead of time and assemble sandwiches just before cooking.
Storage: Tuna melt sandwiches are best eaten fresh, but you can refrigerate leftover tuna filling (not assembled sandwiches) 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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Hi, I'm Allison! I create simple, feel-good recipes and cozy sweets. Because let's be honest: life is just better with cookies. 🍪

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