This tuna melt with dill mayo is crispy, cheesy, creamy, and packed with classic diner-style flavor. Made with flaky albacore tuna, fresh dill, melted Swiss and cheddar cheese, and buttery toasted sourdough bread, this easy tuna melt recipe comes together in under 30 minutes for the perfect comforting lunch or quick dinner. The creamy dill mayo filling adds fresh herby flavor while the golden toasted bread and gooey melted cheese make every bite rich, savory, and satisfying.

If you love classic comfort food recipes, this homemade tuna melt sandwich is an easy meal that tastes far better than anything from a café or diner. The combination of creamy tuna salad, crispy toasted bread, and perfectly melted cheese creates the ultimate hot sandwich recipe for busy weekdays, cozy weekends, or quick family meals. Serve this tuna melt with tomato soup, fries, potato chips, or pickles for a simple and delicious meal everyone will love.

💛 Why You’ll Love This Tuna Melt with Dill Mayo

Crispy, Creamy, and Cheesy

This tuna melt with dill mayo has everything you want in a comforting hot sandwich recipe. The buttery toasted sourdough bread becomes perfectly golden and crispy while the creamy tuna filling and melted Swiss and cheddar cheese create a rich, savory bite.

Fresh Dill Flavor

Fresh dill gives this easy tuna melt recipe a bright, herby flavor that balances the rich cheese and creamy mayo beautifully. The dill mayo adds freshness without overpowering the classic tuna melt flavor.

Easy Weeknight Comfort Food

This homemade tuna melt comes together in under 30 minutes using simple pantry ingredients and canned tuna, making it perfect for quick lunches, easy dinners, or cozy comfort food meals during busy weekdays.

Perfect with Your Favorite Sides

Serve this diner-style tuna melt with tomato soup, potato chips, French fries, pasta salad, or dill pickles for a satisfying meal that tastes like something from your favorite café or sandwich shop.

🧀 Ingredient Notes for Tuna Melt with Dill Mayo

Albacore Tuna

Solid white albacore tuna gives this tuna melt with dill mayo a firm, flaky texture and mild flavor. Drain the tuna extremely well so the filling stays creamy instead of watery.

Mayonnaise

Mayonnaise creates the creamy base for the dill mayo tuna filling. It helps bind the tuna together and gives the sandwich a rich, classic tuna melt flavor.

Fresh Dill

Fresh dill is the key ingredient in this easy tuna melt recipe. It adds bright, herby flavor that balances the creamy mayo, savory tuna, and melted cheese.

Dijon Mustard

Dijon mustard adds a subtle tangy bite and gives the tuna filling more depth without overpowering the fresh dill flavor.

Lemon Juice and Pickle Juice

Fresh lemon juice and a small amount of dill pickle juice brighten the tuna filling and keep the sandwich from tasting too heavy. Use just enough for balance, not so much that the filling becomes sharp.

Dill Pickles

Finely chopped dill pickles add mild tang and texture to the creamy tuna salad filling. Chop them small so they blend evenly into every bite.

Celery and Red Onion

Celery adds light crunch while red onion gives a gentle sharpness. Keep both finely diced so the filling stays balanced and easy to spread.

Sourdough Bread

Sturdy sourdough bread is ideal for this homemade tuna melt because it crisps beautifully and holds the creamy filling without falling apart.

Swiss and Cheddar Cheese

Swiss cheese melts smoothly and adds creamy nuttiness, while sharp cheddar adds a stronger savory finish. Together, they make this diner-style tuna melt extra cheesy and flavorful.

Butter

Softened butter helps the bread toast evenly into a golden, crispy crust. Spread it all the way to the edges for the best texture.

🥪 How to Make Tuna Melt with Dill Mayo

Step 1: Drain the Tuna

Drain the canned tuna extremely well to remove excess moisture. This helps the tuna melt stay creamy without making the bread soggy during cooking.

Step 2: Make the Dill Mayo Tuna Filling

In a medium mixing bowl, combine the tuna, mayonnaise, fresh dill, Dijon mustard, lemon juice, dill pickle juice, chopped dill pickles, garlic powder, kosher salt, and black pepper until evenly mixed.

Step 3: Add the Vegetables

Fold in the finely diced celery and red onion. These ingredients add fresh crunch and texture to the creamy tuna filling.

Step 4: Butter the Bread

Spread softened butter on one side of each slice of sourdough bread. The butter helps create a crispy, golden brown crust while cooking.

Step 5: Assemble the Tuna Melts

Place 4 slices of bread butter-side down. Add Swiss cheese first, then spread the tuna filling evenly over the cheese. Top with cheddar cheese and optional tomato slices before placing the remaining bread slices on top with the buttered side facing outward.

Step 6: Cook Until Golden Brown

Heat a large skillet over medium-low heat. Cook the tuna melts for 4–5 minutes per side until the bread is crispy and golden brown and the cheese is fully melted.

Step 7: Rest and Serve

Let the sandwiches rest for 1 minute before slicing. Serve warm with tomato soup, fries, potato chips, or dill pickles for a classic diner-style meal.

⭐ Pro Tips for Tuna Melt with Dill Mayo

Drain the Tuna Extremely Well

For the best tuna melt with dill mayo, make sure the canned tuna is drained very thoroughly before mixing. Too much moisture can make the filling watery and keep the sourdough bread from getting crispy.

Use Fresh Dill

Fresh dill gives this easy tuna melt recipe the brightest, cleanest flavor. Dried dill can work in a pinch, but fresh dill makes the sandwich taste more homemade and café-style.

Cook Over Medium-Low Heat

Medium-low heat helps the bread turn golden brown while giving the Swiss and cheddar cheese enough time to melt completely. If the heat is too high, the bread may brown before the cheese is gooey.

Choose Sturdy Bread

Thick-cut sourdough bread works best because it holds the creamy tuna filling without falling apart. It also gives the sandwich a crisp, buttery crust.

Pat Tomato Slices Dry

If you add tomato, pat the slices dry with a paper towel first. This keeps the tuna melt sandwich from becoming soggy while it cooks.

Let the Sandwich Rest Before Slicing

Resting the tuna melt for 1 minute after cooking helps the filling settle and makes the sandwich easier to slice cleanly.

✨ Variations for Tuna Melt with Dill Mayo

Bacon Tuna Melt

Add crispy bacon slices for a smoky, savory twist that pairs perfectly with the creamy dill mayo and melted cheese.

Spicy Tuna Melt

Mix diced pickled jalapeños or a few dashes of hot sauce into the tuna filling for extra heat and flavor.

Rye Bread Tuna Melt

Swap the sourdough bread for rye bread to create a classic deli-style tuna melt with deeper savory flavor.

Extra Cheesy Tuna Melt

Add a little Havarti or mozzarella cheese for an even creamier and gooier melted cheese texture.

Tomato Tuna Melt

Add thin tomato slices for fresh flavor and extra juiciness. Be sure to pat the tomatoes dry before assembling the sandwiches.

Open-Faced Tuna Melt

Make an open-faced version by placing the tuna filling and cheese on one slice of bread and broiling until bubbly and golden brown.

🧊 Storage and Make Ahead Tips for Tuna Melt with Dill Mayo

How to Store Tuna Melt Filling

Store the dill mayo tuna filling in an airtight container in the refrigerator for up to 3 days. Keeping the filling separate from the bread helps maintain the best texture and prevents soggy sandwiches.

Best Way to Reheat Tuna Melts

Reheat leftover tuna melts in a skillet over medium-low heat or in an air fryer until the bread becomes crispy again and the cheese is fully melted. Avoid microwaving if possible because the bread can become soft.

Make Ahead Instructions

The tuna filling can be prepared ahead of time and refrigerated until ready to use. Assemble and cook the sandwiches fresh for the best crispy texture and melted cheese.

Can You Freeze Tuna Melts?

Freezing fully assembled tuna melts is not recommended because the mayonnaise-based filling can change texture after thawing. However, the tuna filling itself can be frozen for up to 1 month if needed.

Keep the Bread Crispy

If making multiple sandwiches, place cooked tuna melts on a wire rack instead of stacking them. This helps keep the toasted sourdough bread crispy instead of softening from trapped steam.

❓ Tuna Melt with Dill Mayo FAQ

What cheese is best for a tuna melt?

Swiss cheese and sharp cheddar cheese work especially well in this tuna melt with dill mayo. Swiss melts smoothly and adds a creamy, mild flavor, while cheddar gives the sandwich a sharper savory finish.

How do you keep a tuna melt from getting soggy?

Drain the tuna extremely well, use sturdy sourdough bread, and cook the sandwich over medium-low heat. Placing cheese between the bread and tuna filling also helps protect the bread from excess moisture.

Can I use dried dill instead of fresh dill?

Yes, you can use dried dill if needed, but fresh dill gives this easy tuna melt recipe the best flavor. Use about 1 1/2 teaspoons dried dill in place of the fresh dill.

Can I make this tuna melt ahead of time?

The dill mayo tuna filling can be made ahead and stored in the refrigerator for up to 3 days. For the crispiest texture, assemble and cook the tuna melts fresh right before serving.

What bread is best for tuna melts?

Thick-cut sourdough bread is best because it crisps beautifully and holds the creamy tuna filling without falling apart. Rye bread, Texas toast, or sturdy white bread can also work well.

What should I serve with a tuna melt?

This homemade tuna melt pairs well with tomato soup, potato chips, French fries, dill pickles, pasta salad, coleslaw, or a simple green salad for an easy lunch or dinner.

🥪 More Comforting Sandwich and Melt Recipes

If you love this tuna melt with dill mayo, here are a few more cheesy, crispy, and flavor-packed sandwich recipes to try next. These easy comfort food recipes are perfect for quick lunches, cozy dinners, and satisfying family meals.

Cajun Pulled Pork Grilled Cheese

This bold grilled cheese recipe combines tender pulled pork, Cajun seasoning, and gooey melted cheese for a rich and hearty sandwich packed with smoky flavor.

Apple Cheddar Turkey Melt

This sweet and savory turkey melt features crisp apples, sharp cheddar cheese, and toasted bread for an easy fall-inspired sandwich recipe.

Harissa Chicken Melt

Spicy harissa chicken, melted cheese, and crispy toasted bread make this chicken melt recipe bold, flavorful, and perfect for sandwich lovers.

Spicy Bacon Gouda Grilled Cheese

This grilled cheese sandwich combines smoky Gouda, crispy bacon, and spicy flavor for the ultimate rich and cheesy comfort food recipe.

Pizza Grilled Cheese Sandwich

This pizza-inspired grilled cheese is loaded with melty mozzarella, pepperoni, and classic pizza flavor inside crispy buttery bread.