Spicy Tuna Melt Sandwich

Featured in: Weeknight Dinners

This spicy tuna melt combines seasoned tuna salad with mayonnaise, sriracha, Dijon mustard, celery, and red onion, topped with melted cheddar cheese on buttered sourdough bread. Toast until golden and crispy in a skillet for a delicious result in just 20 minutes.

Customize with pepper jack cheese for extra heat, add jalapeños, or swap the bread for whole wheat or rye. Serve alongside pickles or a crisp green salad to complete the meal.

Updated on Sun, 18 Jan 2026 08:21:00 GMT
Golden brown sourdough slices hold a zesty spicy tuna melt, filled with melted cheddar cheese and a hint of sriracha.  Save
Golden brown sourdough slices hold a zesty spicy tuna melt, filled with melted cheddar cheese and a hint of sriracha. | electricpork.com

My neighbor knocked on my door one rainy Tuesday holding a can of tuna and asking if I had any ideas. We rummaged through my fridge, found some sriracha and cheese, and ended up making these melts on the fly. The butter sizzled against the bread, the cheese bubbled at the edges, and we ate them standing at the counter while the rain drummed against the window. Ive made them a hundred times since, but that first accidental version still feels like the blueprint.

I started making these for my brother after his late shifts at the hospital. Hed come home exhausted, too tired to think, and Id have one waiting wrapped in foil. He never said much, just ate it in four bites and nodded. It became our quiet ritual, the kind of thing that didnt need words but mattered anyway.

Ingredients

  • Canned tuna in water, drained: I always press the lid down hard to squeeze out every bit of water, otherwise the salad gets watery and sad.
  • Mayonnaise: This is the creamy glue that holds everything together, and I never skimp because it makes the filling rich and smooth.
  • Sriracha or hot sauce: Start with less if you are nervous, you can always add more but you cannot take it back once it burns.
  • Dijon mustard: It adds a sharp tangy backbone that cuts through the mayo and keeps things interesting.
  • Celery stalk, finely chopped: The crunch is everything here, it wakes up the texture and keeps each bite lively.
  • Small red onion, finely chopped: Raw onion brings a little bite and sweetness, and I always rinse it under cold water first to mellow the sharpness.
  • Fresh parsley, chopped: Optional but lovely, it adds a fresh green note that makes the filling taste brighter.
  • Salt and black pepper: Taste as you go, tuna needs more seasoning than you think.
  • Sourdough bread: The slight tang and sturdy texture hold up to the filling and get perfectly crispy when you butter and toast them.
  • Unsalted butter, softened: Spread it all the way to the edges so every corner gets golden and crunchy.
  • Shredded cheddar cheese: It melts into gooey pockets, and if you want more heat, swap in pepper jack.
  • Medium tomato, thinly sliced: Optional but nice for a juicy contrast, just pat the slices dry so they do not make the bread soggy.

Instructions

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Make the spicy tuna salad:
In a mixing bowl, combine the drained tuna, mayonnaise, sriracha, Dijon mustard, celery, red onion, parsley, salt, and pepper. Mix everything together until it looks creamy and evenly blended, and taste it to see if it needs more heat or salt.
Prep the bread:
Lay out all eight slices of sourdough and spread softened butter on one side of each slice, making sure to reach the edges. This is what creates that golden crust you want.
Build the sandwiches:
Flip four slices so the unbuttered side faces up, then divide the tuna salad evenly among them. Top each with shredded cheese and tomato slices if you are using them, then close with the remaining bread slices, buttered side facing out.
Toast until golden:
Heat a large nonstick skillet or griddle over medium heat and place the sandwiches in the pan. Cook for three to four minutes per side, pressing gently with a spatula, until the bread turns deep golden brown and the cheese melts into gooey pools.
Slice and serve:
Transfer the sandwiches to a cutting board, slice them in half, and serve them hot while the cheese is still stretchy. They taste best right away, straight from the skillet.
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Grill meats and vegetables indoors with beautiful sear marks and easy cleanup using minimal oil.
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A classic spicy tuna melt sandwich rests on a wooden board, showcasing its gooey cheese and flaky tuna filling.  Save
A classic spicy tuna melt sandwich rests on a wooden board, showcasing its gooey cheese and flaky tuna filling. | electricpork.com

One evening, I made these for a friend going through a breakup. She sat at my kitchen table, quiet and tired, and I did not know what to say. I just handed her a plate with a warm melt and a pickle on the side. She took a bite, smiled a little, and said it tasted like being taken care of. I think about that every time I make them now.

How to Store and Reheat

I usually do not make these ahead because they taste best fresh, but if you have leftovers, wrap them in foil and keep them in the fridge for up to a day. Reheat them in a dry skillet over low heat, pressing gently, until the bread crisps up again and the cheese softens. The microwave will make them soggy, so avoid it if you can.

Ways to Make It Your Own

Sometimes I add sliced jalapeños to the tuna salad when I want extra heat, or I swap the cheddar for pepper jack and watch peoples eyes widen. A handful of baby spinach or arugula tucked inside adds a peppery crunch, and if I have pickles on hand, I chop them into the salad for a briny tang. You can also use whole wheat or rye bread if you want something heartier, just keep the butter generous.

What to Serve Alongside

These melts are rich and satisfying on their own, but I almost always serve them with something crisp and bright to balance the richness. A handful of kettle chips, a simple green salad with lemon vinaigrette, or dill pickles cut into spears all work beautifully. On colder days, I pair them with tomato soup, and the combination feels like the most comforting lunch you can imagine.

  • Try serving with a handful of crispy potato chips for crunch.
  • A side of coleslaw adds a cool tangy contrast to the warm melted cheese.
  • Pickles are not optional in my house, they cut through the richness perfectly.
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Close-up view of a spicy tuna melt, highlighting the toasted bread, melted cheese, and vibrant red tomato slices. Save
Close-up view of a spicy tuna melt, highlighting the toasted bread, melted cheese, and vibrant red tomato slices. | electricpork.com

This sandwich has become my answer to tired nights, unexpected guests, and days when I just need something warm and easy. I hope it finds a spot in your kitchen the way it has in mine.

Recipe Questions & Answers

Can I use fresh tuna instead of canned?

Yes, you can use fresh tuna. Cook and flake 1 pound of fresh tuna, then prepare the salad as directed. Fresh tuna will give a lighter texture compared to canned.

How do I make this less spicy?

Reduce or omit the sriracha, and use regular cheddar cheese instead of pepper jack. You can also skip the jalapeños if adding them. Dijon mustard provides mild heat, so adjust that as well.

What cheese works best for melting?

Cheddar and pepper jack are excellent choices. Provolone, Swiss, or American cheese also melt beautifully and complement the tuna salad well.

Can I prepare the tuna salad ahead of time?

Absolutely. Make the tuna salad up to 24 hours ahead and store it covered in the refrigerator. Assemble and toast the sandwiches when ready to eat.

What's the best way to prevent the bread from getting soggy?

Butter the outside bread slices generously and cook until golden quickly. Keep the melted cheese between the bread and tuna salad as a barrier, or add tomato slices sparingly.

Spicy Tuna Melt Sandwich

Zesty tuna salad with sriracha, melted cheese, and crispy toasted sourdough. A quick, satisfying comfort sandwich.

Prep Duration
10 minutes
Time to Cook
10 minutes
Overall Time
20 minutes
Created by Grace Martin


Skill Level Easy

Cuisine American

Makes 4 Portions

Diet Info None specified

What You'll Need

Spicy Tuna Salad

01 2 cans (5 oz each) tuna in water, drained
02 1/3 cup mayonnaise
03 1 tablespoon sriracha or hot sauce
04 1 tablespoon Dijon mustard
05 1 celery stalk, finely chopped
06 1 small red onion, finely chopped
07 1 tablespoon fresh parsley, chopped
08 Salt and black pepper to taste

Sandwich Assembly

01 8 slices sourdough bread
02 2 tablespoons unsalted butter, softened
03 1 cup shredded cheddar cheese
04 1 medium tomato, thinly sliced

How To Make It

Step 01

Prepare Spicy Tuna Mixture: In a mixing bowl, combine drained tuna, mayonnaise, sriracha, Dijon mustard, celery, red onion, parsley, salt, and pepper. Mix thoroughly until evenly incorporated.

Step 02

Butter Bread Slices: Lay out sourdough bread slices and butter one side of each slice evenly.

Step 03

Assemble Sandwich Filling: Flip 4 bread slices with unbuttered side facing up. Divide spicy tuna salad evenly among them. Top each with shredded cheese and tomato slices.

Step 04

Close Sandwiches: Cover each filled slice with remaining bread slices, positioning buttered side facing outward.

Step 05

Toast Sandwiches: Heat large nonstick skillet over medium heat. Place sandwiches in skillet and cook 3-4 minutes per side, pressing gently, until bread is golden brown and cheese is fully melted.

Step 06

Finish and Serve: Slice sandwiches in half and serve immediately while hot.

Gear Needed

  • Mixing bowl
  • Spoon or spatula
  • Knife and cutting board
  • Nonstick skillet or griddle
  • Spatula for turning

Allergen Details

Be sure to carefully review ingredients for allergens. Check with your healthcare provider when uncertain.
  • Contains fish (tuna)
  • Contains eggs (mayonnaise)
  • Contains wheat (bread)
  • Contains milk (cheese and butter)

Nutrition (per portion)

For informational use only, not a substitute for professional advice.
  • Caloric value: 420
  • Fat content: 23 g
  • Carbohydrates: 32 g
  • Proteins: 27 g