Mozzarella Tuna Melt

Seafood

October 30, 2026

Mozzarella Tuna Melt – vegetarian recipe

Mozzarella tuna melt is a skillet meal for two that leans on eggs, mayo, and bubbling cheese instead of bread. Onions soften first, then tuna flakes in with the eggs and a blanket of mozzarella. It is warm, gooey, and ready in about ten minutes.

Ingredients

  • 1.0 tbsp. (15ml) olive oil
  • 0.5 cups (75g / 2.65 oz) diced yellow onion
  • 8.0 oz (225g) canned tuna
  • 0.25 cups (55g / 1.94 oz) mayonnaise
  • 2 large eggs (approx. 100g / 3.5 oz)
  • 2.0 oz (55g) shredded mozzarella cheese
  • 1 green onion (approx. 15g / 0.53 oz), sliced

Step-by-Step Directions

  1. Heat 1.0 tbsp. (15ml) olive oil in a skillet over medium heat, add the 0.5 cups (75g / 2.65 oz) diced yellow onion, and cook for 5 minutes until softened.
  2. Strain the 8.0 oz (225g) canned tuna completely, flake it into the skillet, and stir in the 0.25 cups (55g / 1.94 oz) mayonnaise and 2 large eggs (100g / 3.5 oz).
  3. Season the mixture well to your liking, sprinkle the 2.0 oz (55g) shredded mozzarella cheese over the top, and cook for 2 minutes or until the cheese melts completely.
  4. Remove from heat, top with the sliced green onion, and serve your warm meal immediately.

Nutrition Information (Per Serving)

  • Calories: 110
  • Fat: 10g (0.35 oz)
  • Protein: 26g (0.92 oz)
  • Servings: 2

Pro Tips

As a chef, I always look for ways to elevate simple ingredients. Here are a few expert tips to ensure your skillet tuna melt turns out flawlessly every time:

  • Drain the Tuna Thoroughly: To prevent a soggy or watery dish, press as much liquid out of your canned tuna as possible before flaking it into the skillet. A dry base ensures the mayonnaise and eggs bind everything together perfectly.
  • Grate Your Own Cheese: Pre-shredded cheese is often coated in anti-caking agents (like potato starch) that prevent it from melting smoothly. For that perfect, gooey cheese pull, buy a block of mozzarella and grate it yourself.
  • Control Your Heat: When you add the eggs, make sure your skillet isn't too hot. You want to gently scramble the mixture so the eggs remain tender and creamy while the mozzarella melts, rather than becoming rubbery.
  • Amp Up the Flavor: While the base recipe is fantastic, you can easily customize this dish. Try adding a pinch of smoked paprika, a dash of hot sauce, or a teaspoon of Dijon mustard to the tuna mixture for a complex flavor boost.

Frequently Asked Questions (FAQ)

What is the best type of canned tuna for a Mozzarella Tuna Melt? For the best texture and flavor, use solid white albacore tuna packed in water or olive oil. It yields large, meaty flakes that hold up well in the skillet. Chunk light tuna also works but tends to have a softer, slightly mushier texture. Regardless of the type, ensure it is drained completely before cooking.

Can I substitute the cheese in this Mozzarella Tuna Melt? Absolutely! While mozzarella provides a wonderful, mild flavor and incredible stretch, you can easily swap it out. Sharp cheddar, mild provolone, or even pepper jack are excellent alternatives that will give your cheesy tuna skillet a different but equally delicious flavor profile.

Is this easy tuna melt recipe keto-friendly? Yes, it is! Because this recipe skips the traditional bread and is prepared entirely in a skillet, it is naturally low-carb and keto-friendly. With healthy fats from the olive oil and mayonnaise, plus 26g (0.92 oz) of protein per serving, it fits perfectly into a ketogenic diet.

Can I make this stovetop tuna recipe ahead of time? This Mozzarella Tuna Melt is best enjoyed fresh straight from the skillet while the cheese is hot and gooey. Reheating eggs and melted cheese can result in a rubbery texture. However, you can save time by dicing your onions and pre-mixing your tuna and mayonnaise up to a day in advance and storing them in the fridge.

Pro Tips

  • Keep the skillet moderate when the eggs go in — gentle scrambling keeps them tender and creamy while the mozzarella melts, instead of turning rubbery.
  • Strain and press the canned tuna completely dry; a wet base keeps the mayo and eggs from binding the melt together.
  • Grate mozzarella from a block — pre-shredded cheese is dusted with anti-caking starch that keeps it from melting into a smooth pull.
  • A pinch of smoked paprika, a dash of hot sauce, or a teaspoon of Dijon stirred into the tuna mixture adds depth without touching the keto macros.
  • Serve straight from the skillet with the green onions on top; the melt firms up as it cools.

Frequently Asked Questions

Can I make mozzarella tuna melt ahead?

It is best fresh, but leftovers keep a day in the fridge. Rewarm gently in a covered skillet so the eggs do not toughen.

Is this dish keto-friendly?

Yes — the recipe lists no meaningful carbs, with 10g of fat and 26g of protein per serving. It is a bread-free melt by design.

Can I swap the mozzarella?

Cheddar or provolone melt just as well from a freshly grated block and keep the carb count at zero.

What can I serve alongside it?

A simple green salad or sautéed greens keep the plate low carb while the melt is hot and gooey.

Recipe card below.

More Recipes You'll Love

Mozzarella Tuna Melt – vegetarian recipe
Stav Kogan

Mozzarella Tuna Melt

Servings: 2 servings
Calories: 110

Ingredients
  

  • 1.0 tbsp (15ml) olive oil
  • 0.5 cups (75g / 2.65 oz) diced yellow onion
  • 8.0 oz (225g) canned tuna
  • 0.25 cups (55g / 1.94 oz) mayonnaise
  • 2 large eggs (approx. 100g / 3.5 oz)
  • 2.0 oz (55g) shredded mozzarella cheese
  • 1 green onion (approx. 15g / 0.53 oz), sliced
  • Control Your Heat: When you add the eggs, make sure your skillet isn't too hot. You want to gently scramble the mixture so the eggs remain tender and creamy while the mozzarella melts, rather than becoming rubbery.
  • Amp Up the Flavor: While the base recipe is fantastic, you can easily customize this dish. Try adding a pinch of smoked paprika, a dash of hot sauce, or a teaspoon of Dijon mustard to the tuna mixture for a complex flavor boost.

Method
 

  1. Heat 1. 0 tbsp. (15ml) olive oil in a skillet over medium heat, add the 0. 5 cups (75g / 2.65 oz) diced yellow onion, and cook for 5 minutes until softened.
  2. Strain the 8. 0 oz (225g) canned tuna completely, flake it into the skillet, and stir in the 0. 25 cups (55g / 1.94 oz) mayonnaise and 2 large eggs (100g / 3.5 oz).
  3. Season the mixture well to your liking, sprinkle the 2. 0 oz (55g) shredded mozzarella cheese over the top, and cook for 2 minutes or until the cheese melts completely.
  4. Remove from heat, top with the sliced green onion, and serve your warm meal immediately.
  5. Drain the Tuna Thoroughly: To prevent a soggy or watery dish, press as much liquid out of your canned tuna as possible before flaking it into the skillet. A dry base ensures the mayonnaise and eggs bind everything together perfectly.
  6. Grate Your Own Cheese: Pre-shredded cheese is often coated in anti-caking agents (like potato starch) that prevent it from melting smoothly. For that perfect, gooey cheese pull, buy a block of mozzarella and grate it yourself.

Nutrition

Calories: 110kcalProtein: 26gFat: 10g

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