There's something truly comforting about the smell of melted cheese wafting through my kitchen, especially when it's paired with the hearty goodness of tuna. One evening, after a particularly chaotic day, I found myself rummaging through the pantry, searching for a way to shake off that fast-food monotony. My eyes landed on cans of tuna and some odds and ends that had potential. Thus, the Sheet Pan Tuna Melts were born—a simple yet delicious solution!
These scrumptious melts combine the rich creaminess of mayo, zesty Dijon mustard, and fresh crunch from celery and onion, all topped with gooey, melted cheese. They come together in just 25 minutes, making them perfect for a quick weeknight dinner or a cozy weekend lunch. Plus, they are incredibly versatile—feel free to tweak the toppings based on what you have on hand. Trust me, once you sink your teeth into this melty, flavorful delight, you’ll forget all about that drive-thru temptation!
Why You'll Love This Sheet Pan Tuna Melts
- This recipe is incredibly easy to whip up, perfect for those nights when you need a quick and satisfying meal.
- You'll fall in love with the irresistible flavor of the creamy tuna mixture combined with melty cheese, creating a deliciously comforting dish.
- The versatility of this recipe allows you to customize it with your favorite toppings, making it a great option for everyone at the table.
- Plus, the visual appeal of these golden, cheesy melts fresh from the oven will have your family and friends asking for seconds.
Sheet Pan Tuna Melts Ingredients
For the Tuna Mixture
• Tuna – 3 cans of drained tuna for a rich, protein-packed base that keeps the dish hearty.
• Mayonnaise – 0.5 cup mayonnaise adds creaminess to the tuna mixture, ensuring every bite is luscious.
• Dijon Mustard – 1 tablespoon Dijon mustard for a zesty kick that perfectly complements the tuna.
• Celery – 1 celery stalk, finely diced for a satisfying crunch and fresh flavor.
• Red Onion – 0.25 cup red onion, finely diced for a subtle sharpness that enhances the overall taste.
• Lemon Juice – 1 tablespoon lemon juice brightens the flavors and balances the richness of the mayo.
For the Assembly
• Bread – 8 slices of your favorite bread, acting as a sturdy base for these decadent melts.
• Shredded Cheese – 1.5 cups shredded cheese that melts beautifully, creating a gooey, golden topping that elevates the dish.
Dive into the delicious world of Sheet Pan Tuna Melts and enjoy this delightful twist on a classic!

How to Make Sheet Pan Tuna Melts
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Preheat Oven: Set your oven to 400°F (205°C) and line a baking sheet with parchment paper. This step ensures everything bakes evenly while you prepare your delicious tuna mixture.
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Combine Ingredients: In a large bowl, mix the drained tuna, mayonnaise, Dijon mustard, diced celery, diced red onion, lemon juice, and a pinch of salt and pepper. Stir until well combined, creating a creamy filling.
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Toast Bread: Lightly toast the 8 slices of bread in the oven for about 5 minutes. This step helps the bread hold up to the tuna mixture and adds a lovely crunch.
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Assemble the Melts: Generously spread the tuna mixture over each slice of toasted bread. Top with shredded cheese, ensuring an even layer that will become delightfully melty.
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Bake to Perfection: Place the assembled melts in the preheated oven and bake for about 10 minutes, or until the cheese is melted and bubbly. Keep an eye on them for that perfect golden finish!
Optional: Garnish with fresh parsley for a pop of color and flavor.
Exact quantities are listed in the recipe card below.
Sheet Pan Tuna Melts Variations
Feel free to play around with flavors and ingredients to make these melts even more delightful!
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Spicy Kick: Add chopped jalapeños or a dash of hot sauce to the tuna mixture for a zesty heat that awakens your taste buds.
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Herbed Delight: Mix in your favorite fresh herbs like dill or parsley for an extra layer of flavor that complements the tuna beautifully.
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Whole Grain Option: Swap out the bread for whole-grain or gluten-free versions to cater to dietary preferences while keeping it hearty and satisfying.
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Veggie-Loaded: Toss in diced bell peppers or spinach to the tuna mixture for added nutrition and a pop of color that makes this dish even more appealing.
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Cheese Variety: Experiment with different cheeses like pepper jack for a spicy twist or feta for a tangy flair that transforms the classic melt.
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Creamy Avocado: Spread a layer of mashed avocado on the toasted bread before adding the tuna mixture. It adds creaminess and a fresh taste.
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Mediterranean Flair: Incorporate olives and sun-dried tomatoes into the mixture for a Mediterranean vibe that will transport you straight to the coast!
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Crunchy Topping: Sprinkle panko breadcrumbs on top before baking for an extra crispy finish that adds texture to every delicious bite.
Let your creativity shine and enjoy the delightful journey of customizing these Sheet Pan Tuna Melts!
What to Serve with Sheet Pan Tuna Melts?
Imagine a table filled with warm, comforting dishes that perfectly complement the melty goodness of your tuna melts.
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Crispy French Fries: Perfectly seasoned, their crunch offers a delightful contrast to the soft, cheesy melts. A classic pairing that everyone adores!
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Garden Salad: Fresh greens with a tangy vinaigrette can cut through the richness of the tuna, adding a refreshing bite alongside your melts.
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Pickled Vegetables: The acidity of pickles brings a bright zing that enhances the flavors of the tuna. A crunchy side that’s unexpectedly delightful!
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Coleslaw: Creamy and slightly tangy, this crunchy slaw adds texture and pairs beautifully with the savory flavor of the tuna melts.
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Roasted Vegetables: A mix of seasonal veggies, such as carrots and zucchini, adds color and a subtle sweetness, balancing out the meal.
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Lemonade or Iced Tea: A refreshing drink like lemonade offsets the savory profile with a sweet and tart contrast. Perfect for warm days!
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Chocolate Chip Cookies: End on a sweet note! Warm cookies bring nostalgia and warmth, making your meal feel complete and loving.
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Sliced Avocado: Creamy avocado adds healthy fats, while its mild flavor complements the tuna beautifully, making every bite richer.
Make Ahead Options
These Sheet Pan Tuna Melts are fantastic for meal prep and can save you valuable time on busy weeknights! To prep ahead, you can mix the tuna mixture (tuna, mayo, mustard, celery, onion, and lemon juice) and store it in the refrigerator for up to 3 days. Just remember to keep it in an airtight container to maintain its freshness. You can also lightly toast the bread and assemble the melts, storing them in the fridge for up to 24 hours before baking. When you're ready to enjoy, simply bake the assembled melts at 400°F (205°C) for about 10 minutes until the cheese is bubbling and golden—you'll have a delicious meal ready in no time!
How to Store and Freeze Sheet Pan Tuna Melts
Fridge: Store any leftovers in an airtight container for up to 3 days. Make sure the tuna melts have cooled to room temperature before sealing.
Freezer: For longer-lasting melts, freeze them individually wrapped in plastic wrap and then in a airtight container for up to 2 months.
Reheating: To reheat, bake frozen tuna melts at 350°F (175°C) for about 15-20 minutes or until heated through. You can also microwave for about 2-3 minutes, but oven baking is recommended for crispy bread.
Storage Tips: If you plan to make ahead, assemble without cheese and store in the fridge for up to 24 hours. Add cheese just before baking to enjoy that gooey goodness!
Chef's Helpful Tips
- When making Sheet Pan Tuna Melts, ensure you drain the tuna thoroughly to prevent a watery mixture that can make the bread soggy.
- For the bread, consider using a sturdy type like sourdough or ciabatta to hold up against the moist tuna filling and cheese.
- Remember to toast the bread just not too long, as it needs to retain some softness while providing a crunch.
- Monitor the baking time closely as ovens vary; you're looking for the cheese to be beautifully melted and slightly golden.
- Always taste your tuna mixture before spreading it on the bread to adjust the seasoning to your preference.
Sheet Pan Tuna Melts Recipe FAQs
How do I choose the right tuna for this recipe?
Absolutely! When selecting tuna, look for products that are packed in water or olive oil—these tend to have better flavor and texture. I recommend choosing chunk light or solid white tuna for a delicate taste and good-sized flakes. Always check for freshness by looking for labels that indicate 'fresh packed' or low-sodium options if you're watching your salt intake.
What’s the best way to store leftover Sheet Pan Tuna Melts?
Very easy! Just place any leftovers in an airtight container and store them in the fridge. They'll stay fresh for up to 3 days. Make sure the melts have cooled to room temperature before sealing to prevent moisture buildup, which could make the bread soggy.
Can I freeze Sheet Pan Tuna Melts for later?
Of course! To freeze, individually wrap each tuna melt tightly in plastic wrap, then place them into an airtight container or freezer bag. They can be stored in the freezer for up to 2 months. To reheat, simply bake them directly from frozen at 350°F (175°C) for about 15-20 minutes, or until heated through.
What should I do if my tuna mixture is too dry?
No worries, it's easy to fix! If your tuna mixture feels too dry, simply add an extra tablespoon of mayonnaise or a splash of lemon juice to achieve the desired creaminess. Mix well, and don’t hesitate to adjust according to your taste. Remember, cooking is all about personal preference!
Are there any dietary considerations for this recipe?
Definitely! If you or someone you’re serving has seafood allergies, you might want to substitute the tuna with shredded chicken or chickpeas. For those avoiding dairy, try using dairy-free mayonnaise and vegan cheese alternatives. Always check for hidden ingredients in pre-packaged items as well!
How can I modify the toppings for my Sheet Pan Tuna Melts?
The more the merrier! Feel free to personalize your melts with different toppings such as sliced tomatoes, jalapeños, or spinach before adding the cheese. If you'd like to introduce more flavor, consider swapping out the Dijon mustard for a spicy sriracha or adding herbs like dill or parsley directly into the tuna mixture!

Sheet Pan Tuna Melts
Ingredients
Equipment
Method
- Preheat your oven to 400°F (205°C) and line a baking sheet with parchment paper.
- In a large bowl, mix drained tuna, mayonnaise, Dijon mustard, diced celery, diced red onion, lemon juice, and a pinch of salt and pepper until combined.
- Lightly toast the bread in the oven for about 5 minutes.
- Spread the tuna mixture over each slice of toasted bread and top with shredded cheese.
- Bake for about 10 minutes or until the cheese is melted and bubbly.





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