This blue cheese tuna melt is a flavorful twist on a classic American sandwich. Creamy tuna salad is mixed with blue cheese crumbles, topped with melted American cheese, and served warm for an easy lunch, brunch, or quick dinner. You can make it as a traditional sandwich or serve it open-faced.

When the weather starts to turn cooler, warm and comforting lunches become especially appealing. A tuna melt is one of those simple meals that feels cozy without taking much time, and this blue cheese version brings a little extra personality to the table. It has the familiar creaminess of tuna salad, the crunch of fresh vegetables, and the bold, savory flavor of blue cheese balanced by mild, melty American cheese.
This recipe is ideal for weekends, casual brunches, or busy weekdays when you want something satisfying but not complicated. The prep is quick, the ingredients are easy to find, and the whole sandwich comes together in about 15 minutes. If you already enjoy tuna melts, this version is a great way to change up your usual routine without making the recipe fussy.


The key to making this blue cheese tuna melt work is balance. Blue cheese has a strong, distinct flavor, so a small amount goes a long way. Instead of overwhelming the tuna salad, the crumbles add a tangy, savory note that makes the sandwich feel special. The American cheese on top melts beautifully and keeps the sandwich familiar, creamy, and comforting.
The tuna mixture also includes diced green onions, celery, and red bell pepper. These ingredients add freshness, color, and texture, so the filling does not feel heavy. The celery gives a crisp bite, the green onions add mild sharpness, and the red bell pepper brings a little sweetness. Together, they make a simple canned tuna recipe taste brighter and more interesting.
If you prefer a creamier tuna salad, you can add a little more mayonnaise. The recipe uses low-fat mayo, but the amount can be adjusted depending on your taste. Some people like a drier tuna melt that holds together well, while others prefer a richer, softer filling. Either way, the sandwich will still toast well and taste delicious once the cheese melts over the top.

Blue Cheese Tuna Melt
This blue cheese tuna melt is a simple way to upgrade a classic tuna sandwich. Traditional tuna melts are often made with cheddar, but this recipe uses blue cheese in the tuna mixture and American cheese on top. The result is creamy, savory, slightly tangy, and perfectly melty.
You can make these sandwiches with two slices of bread each, or you can serve them open-faced. The open-faced version uses only one slice of bread per serving and still gives you all the flavor of a classic tuna melt. It is also a good option if you want a lighter sandwich or prefer more filling and topping than bread.
To get the best texture, toast the bread before adding the tuna mixture. This helps the bread stay sturdy once the filling and cheese are added. After assembling the sandwiches, place them in the oven or under the broiler until the cheese is melted and bubbly. Keep an eye on them, especially if using the broiler, because the cheese can melt quickly.
Serve these tuna melts immediately while the cheese is still warm. They are filling enough on their own, but they also pair well with a simple salad, pickles, chips, or a bowl of soup. Because the recipe makes four servings, it is useful for a family lunch or a quick meal with leftovers for later.


Blue Cheese Tuna Melt
5 minutes
10 minutes
15 minutes
Dinner | Lunch
American
4
335kcal
Jenny Bullistron
Ingredients
- ⅓ cup diced green onions
- ⅓ cup diced celery
- ⅓ cup diced red bell pepper
- 10 ounces tuna in water, drained
- ¼ cup low-fat mayo
- ⅛ cup blue cheese crumbles
- salt and pepper to taste
- 8 pieces bread use 4 slices for open-faced sandwiches
- 8 ounces shredded American cheese or 4 slices of American cheese
Instructions
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Preheat the oven to 400 degrees, or turn on the broiler.
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In a small bowl, combine the green onions, celery, red bell pepper, drained tuna, mayonnaise, blue cheese crumbles, salt, and pepper. Mix until everything is evenly combined.
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Toast the bread. Divide the tuna mixture evenly among 4 slices of bread. Top each portion with 2 ounces of shredded American cheese, or use one slice of American cheese per sandwich.
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Place the sandwiches on a baking sheet. Bake or broil for 5 to 7 minutes, or until the cheese is melted. Remove from the oven, top with the remaining bread slices if making full sandwiches, and serve warm.
Nutrition
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Calories: 335kcal
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Carbohydrates: 6g
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Protein: 25g
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Fat: 23g
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Saturated Fat: 12g
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Cholesterol: 88mg
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Sodium: 1285mg
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Potassium: 289mg
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Fiber: 1g
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Sugar: 3g
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Calcium: 641mg
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Iron: 2mg