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Keto Tuna Melt

This Keto Tuna Melt is ready in minutes, perfect for a quick dinner or lunch for busy days.

Two keto tuna melts freshly baked, laying on a wooden cutting board.

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This post was originally published on October 6, 2018 and has been updated with fresh images and content, though the recipe itself has remained perfectly the same!

The inspiration for this dish came from my mom, who had been teasing me with her super simple and easy dinner: tuna melt! I was so jealous because Mom Days are crazy around here, driving kids to school, plus activities and life in general. It’s mayhem!

For the days where I just can’t seem to catch up, this Keto Tuna Melt comes in like a night in shining armour!

Why it works

  1. Very fast to make – this Keto Tuna Melt is ready in minutes!
  2. Family approved – my whole family loves when I make Keto Tuna Melt for dinner!
  3. Tuna and cheese go together like two peas in a pod, making this a dish that is just as tasty as it is fast and easy to make!
Two freshly baked keto tuna melts on a baking sheet.

Ingredients

  • tuna
  • mayonnaise
  • sea salt
  • ground black pepper
  • cheddar cheese
  • keto bread

Keto Bread – You can use whatever you like to make this Keto Tuna Melt! My #1 favourite is a 90 Second Keto Bread because it takes minutes to make, but you can use either bread slices, a bun sliced in half (like these Low Carb Onion Buns), or even a Keto Hot Dog Bun.

How to make Keto Tuna Melt

If you are going to go with the 90 Second Keto Bread, make that first and then turn the oven on to broil. Open a can of tuna and drain the liquid out, then empty half of it into a bowl with 2 tbsp mayonnaise. Mix with a fork until fully combined and then add salt and pepper to taste.

Bowl of tuna mixed with mayo beside a pile of shredded cheese and a skillet with a 90 second keto bread.

Place the bread on a baking sheet and spread 1/2 tbsp mayo evenly on each piece of keto bread. Divide the tuna mixture between the two breads and then top with the shredded cheddar cheese.

Keto Tuna melts on a baking sheet, ready to be broiled.

Broil in the oven for 1-2 minutes, until the cheese is melted and bubbly. Remove from the oven and serve hot.  

Watch the whole thing go down:

Expert Tips

  1. You can use any type of keto bread you like for this Keto Tuna Melt, however I recommend a 90 Second Keto Bread because it’s fast to make!
  2. Other bread options would be sliced keto bread, Low Carb Onion Bun sliced in half or a Keto Hot Dog Bun sliced in half.
  3. This recipe can be doubled, tripled, quadrupled, or multiplied however you like depending on how many tuna melts you may need!
  4. When broiling the cheese, make sure to keep a close eye on your Keto Tuna Melt because the cheese will burn very quickly!
Two keto tuna melts freshly baked, laying on a wooden cutting board.

Keto Tuna Melt side dishes

These tuna melts are super filling on their own, but if you are looking for a delicious low carb side dish, here is a list of my favourites:

Here are some other keto recipes you might like

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Two keto tuna melts freshly baked, laying on a wooden cutting board.

Keto Tuna Melt

Try this family approved Keto Tuna Melt recipe for a fast and delicious weeknight meal! Ready in under ten minutes, this is a house staple!
5 from 11 votes
Print Pin Rate
Prep Time: 5 minutes
Cook Time: 2 minutes
Total Time: 7 minutes
Servings: 1 person
Author: Aleta

Ingredients

  • 1 keto bread
  • 1/2 can tuna
  • 3 tbsp mayo divided
  • salt & pepper
  • 2-3 tbsp shredded cheddar cheese

Instructions

Equipment Needed

  • Small bowl
  • Can Opener and Fork
  • Baking Sheet 

Directions

  • Make a 90 Second Keto Bread then turn the oven to broil.
  • Open a can of tuna and drain the liquid out. Put half of the can into a bowl with 2 tbsp mayo and salt and pepper to taste. Mix with a fork. 
  • Place the bread on a baking sheet and spread 1/2 tbsp mayo evenly on each piece of 90 second keto bread. Divide the tuna mixture between the two breads and top with the sprinkled cheddar cheese.
  • Broil in the oven for 1-2 minutes, until the cheese has melted and begun to bubble. Remove from the oven and serve hot.

Notes

Expert Tips

  1. You can use any type of keto bread you like for this Keto Tuna Melt, however I recommend a 90 Second Keto Bread because it’s fast to make!
  2. Other bread options would be sliced keto bread, Low Carb Onion Bun sliced in half or a Keto Hot Dog Bun sliced in half.
  3. This recipe can be doubled, tripled, quadrupled, or multiplied however you like depending on how many tuna melts you may need!
  4. When broiling the cheese, make sure to keep a close eye on your Keto Tuna Melt because the cheese will burn very quickly!

Nutrition Facts

Nutrition facts are an estimate only! The ingredients you choose could have different nutritional values than the ingredients I have used.
Deduct fibre from total carbs to get 2.5 g net carbs per serving.

Nutrition

Serving: 1whole recipe | Calories: 821kcal | Carbohydrates: 4.8g | Protein: 38.4g | Fat: 72.3g | Sodium: 1563mg | Fiber: 2.3g

28 Comments

  1. 5 stars
    Oh, wow, that melted gooey cheese is calling my name! I love tuna melts and will have to try this keto bread! It looks fantastic! 🙂

  2. This takes me back to childhood! Such a comfort-food classic – with a clever keto twist! It really is exactly the kind of dinner that busy mamas need – on the table in a flash! Hurray! Great suggestions of other recipes to serve alongside it if I have the time to make a couple recipes – thanks! And Happy Holidays to you and your family, Aleta!

  3. 5 stars
    I think I could live on these tuna melts! All that melty cheesy goodness is definitely my favourite kind of food. And I love that 90-second bread, genius!

  4. 5 stars
    So easy to put together and they deliver such flavors! Great idea for those crazy busy weeknight dinners!

  5. 5 stars
    This is a great recipe for all those carbs-craving keto peeps out there. These look perfectly cheesy and as a huge tuna fan, I would certainly be tempted!

  6. 5 stars
    I can never resist a tuna melt. One of my friends is doing a keto diet and is always asking me what to make. I might send her your way, because she would be all over this 🙂

  7. Looks at all that cheesy goodness! Tuna melts have always been one of my favorites for quick lunches and dinners.

  8. 5 stars
    This is so creative. I have never tried something like this before. So cheesy and delicious!

  9. 5 stars
    I’ve been on a low carb diet for a while now and I’m always looking for new keto recipes. Love this one and the 90 sec bread is awesome! 😀

  10. 5 stars
    I tried keto for a few months and had great results although I know its more of a lifestyle change in the end. I plan to get more into again after the holidays and I’ll be on the hunt for protein-rich meals. This looks like everything I love without all the extra carbs!

  11. 5 stars
    This looks great! I just started Keto, day two already feeling myself to crave carbs and am getting super cranky, so definitely need to try that keto bread too! I love that I can eat cheese though, it’s a lifesaver!

    • Hey Georgie, yes it definitely helps kick that carb crave to the curb! I love sandwiches and breads, so this is an excellent dish to feel fully satisfied 🙂

  12. 5 stars
    Quick and easy is right up my alley for sure! These tuna melts look positively amazing too. 😀 I love finding yummy recipes to make during the week when we are busy. Definitely pinning this one!

  13. 5 stars
    Terrific! I love new Keto ideas. That bread was exactly what I needed to add to our repertoire – quick & easy, too!

  14. This sounds brilliant, I’m adding it to my recipe book for future use. How much is half a can of tuna – what size is your can? I’m in Australia & don’t know whether our tins are the same size as in the US.

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