Grilled to golden perfection, this open-faced tuna melt is a sandwich that you won’t soon forget. Chewy sourdough, tender chunks of tuna, sharp onion, creamy mayo, zingy wholegrain mustard and ooey-gooey goodness of melted cheddar cheese – this is the BEST tuna melt recipe you’ll make!  PS. Low-carb/keto tuna melt alternative included.


Best Tuna Melt Recipe

What Is A Tuna Melt? 

A tuna melt is a type of sandwich that typically consists of tuna salad and melted cheese on bread, which is then grilled or toasted. The tuna salad is usually made by mixing canned tuna with mayonnaise, chopped celery, and sometimes other ingredients like pickles or onions.

The sandwich can be made on any type of bread but is often served on sliced bread, a bagel, or an English muffin. The cheese used for the melt can vary, but cheddar cheese is a popular choice. Tuna melts are a popular lunch or dinner option and are often served with a side of salad or chips.

My BEST Tuna Melt Yet

I love making a grilled tuna melt for lunch and this recipe is my most cooked and loved.  

This is a grilled, open-faced tuna melt made with sourdough bread, which is a much healthier option in my opinion. You can also use gluten-free or paleo-friendly bread.

With plenty of carbs and fibre, plus high-protein tuna and cheese, this meal is satiating and provides a balance of nutrients.

I mix the tuna with creamy mayonnaise, wholegrain mustard and sharp onion, which give it a lot of flavour and tanginess. I will typically use grated Cheddar or Tasty cheese (similar to mild Cheddar) but you can also use Swiss, Mozzarella and so on. 

My biggest tip for an incredible tuna melt is a little sprinkle of sea salt and black pepper after it’s cooked. That little bit of extra salt accentuates all of the flavours in the melt sandwich.

Grilled tuna melt sandwich recipe

What To Serve With Tuna Melt

This tuna melt is great on its own but I love serving it with dill pickles or cornichons on the side and a little salad or sliced tomatoes and cucumbers for freshness. 

It’s also lovely with a little soup on the side, especially tomato or pumpkin, basically any veggie soup. 

How To Make Tuna Melt 

See the full list of ingredients, instructions and nutritional breakdown for this tuna melt recipe below.

I make my tuna melt an open-faced grilled sandwich using the Grill setting of the oven. It is possible to make this in an air fryer as well. You can also use the creamy tuna mixture and cheese to make a toastie or a grilled cheese sandwich in a frying pan or skillet.

Step 1. Pre-toast the bread on the lowest setting in a toaster. This will keep it crunchy on the bottom.

Step 2. Arrange a piece of parchment paper on a flat baking tray. Preheat the oven on the Grill setting while you’re making the tuna melt toppings.

Step 3. Combine strained canned tuna with finely diced white onions, mayonnaise and mustard and mash well with a fork. This is your tuna salad component of the melt. Grate the cheese and set aside.

Step 4. Spread a few tablespoons of the tuna salad mix on each piece of the sourdough toast. Top generously with grated cheese. 

Step 5. Pop the tray under a hot grill (medium-high) but make sure it’s not too close to the grill or the edges of the toast will burn before the cheese melts properly. Grill until the cheese has melted and formed a golden crust. It only takes a few minutes.

Step 6. Remove and cool slightly before serving. Sprinkle with a few pinches of ground black pepper and sea salt. 

Open Faced Tuna Melt Sandwich Recipe

Low-Carb & Keto Tuna Melt

For my readers avoiding carbs or bread, here is an idea for a low-carb or keto tuna melt alternative, which is kind of like a cheesy tuna omelette or frittata.

Prepare the creamy tuna mixture as per this recipe and grated the cheese. Whisk 4 eggs with a little salt in a bowl. Heat an oven-proof skillet or pan on the stove and melt a little butter. Add the whisked eggs and when they just start to cook, remove them from the heat. Spread the tuna mixture on top of the eggs and sprinkle with cheese. Pop under a hot grill for a few minutes for the cheese to melt to golden crust. The egg will finish cooking under the grill.


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Full Recipe 

Find the full list of ingredients, instructions, and a nutritional breakdown below. If you have questions or cook this recipe, please let me know in the comments, and make sure to rate this recipe so it’s easy for others to find.

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Description

Get ready to treat yourself to the ultimate tuna melt experience! This open-faced sandwich is a masterpiece of flavours and textures, featuring chewy sourdough bread, tender chunks of tuna, sharp onions, creamy mayo, zingy wholegrain mustard, and the irresistible ooey-gooey Cheddar cheese grilled to golden perfection. Trust me, this is the BEST tuna melt you’ll ever make!



  • Pre-toast the bread on the lowest setting in a toaster, then arrange the pieces on a piece of parchment paper on a flat baking tray.
  • Preheat the oven to Grill setting while you’re making the toppings.
    Combine strained tuna with finely diced onions, mayonnaise and mustard and mash well with a fork.
  • Grate the cheese and set aside.
  • Spread a few tablespoons of the tuna mix on each piece of toast. Top generously with grated cheese.
  • Pop the tray under a hot grill (medium-high) but make sure it’s not too close to the grill or the edges of the toast will burn before the cheese melts properly. Grill until the cheese has melted and formed a golden crust, it should only take a few minutes.
  • Remove and cool slightly before serving. Sprinkle with a few pinches of ground black pepper and sea salt.


Nutrition

  • Serving Size: 1 tuna melt sandwich
  • Calories: 341
  • Sugar: 2.3 g
  • Sodium: 783.3 mg
  • Fat: 18.6 g
  • Carbohydrates: 21.5 g
  • Fiber: 0.7 g
  • Protein: 17.2 g
  • Cholesterol: 50.9 mg

Keywords: Canned Tuna, Tuna Melt Sandwich, Grilled Cheese, Tuna Grilled Cheese, Tuna Toastie, Grilled Sandwich, Lunch, Sourdough


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The BEST Tuna Melt Recipe

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