This tomato tuna melt recipe will surprise you with flavors that go so well together! When you don’t want a huge meal, this low carb, protein filled dish is the just the thing for your family!

How Do I Make A Tomato Tuna Melt?

Making tuna melts are super simple, but adding a nice, thick tomato slice is just taking the flavors to the next level.

You simply slice a tomato into thick slices, place them on a parchment-lined cookie sheet.

Next, mix the remaining ingredients in a bowl and scoop it evenly on each tomato slice!

There’s something so good about warming up tuna mixture on top of a tomato…the taste is something you’ll have to experience for yourself.

What Ingredients Do I Need For Tuna Melts?

You probably have all of these ingredients in your house right now.

  • tomato
  • canned tuna
  • mayonnaise
  • onion powder
  • salt & pepper
  • smoked cheddar cheese (or your favorite cheese)
Tomato Tuna Melt (THM-S, Low Carb)

Are Tomatoes Low Carb?

Tomatoes are considered low carb in moderation.

You can safely eat half of a large tomato and still be low carb!

Tomato Tuna Melt (THM-S, Low Carb)

Trim Healthy Mama & Tomatoes

Lets talk about Trim Healthy Mama for a minute, shall we?

Maybe you have never heard of THM?

Trim Healthy Mama is a healthy lifestyle that was started by two sisters who had a dream and followed it!

Pearl and Serene are constantly coming up with new products in their store with only the purest ingredients.

It’s amazing to think that they are willing to travel the world to find the best foods and ingredients to be made just for people like you and me!

If this is your first time to hear of Trim Healthy Mama, I’m happy to introduce you to this healthy lifestyle.

THM recipes are delicious, and best of all, they are for anyone in any age group.

Now, about tomatoes and THM…tomatoes are considered a Fuel Pull, and you can have them in an S meal using moderation.

Tomato Tuna Melt (THM-S, Low Carb)

What Kind Of Tuna Should I Use?

I personally like to use solid white Albacore tuna in water.

It is more chunky and not super juicy like some cheaper brands.

Any sort of canned tuna in water will work, just be sure to drain as much liquid as you can.

Tomato Tuna Melt And Other Protein-filled Recipes

Tuna is full of protein and that’s why you’ll love this simple meal…it will keep you full.

Here are just a few other recipes filled with protein.

Oreo Peanut Butter TrufflesOreo peanut butter truffles will be a hit with your friends and family! They are low carb, sugar free and full of protein. These truffles are perfect for an afternoon pick-me-up as well as a sweet treat after your low carb meal.

Easy Baked SalmonBaked salmon can be easy to make and super delicious to eat! This recipe has a buttery sauce to jazz up the already mouthwatering salmon…a low carb meal perfect for the entire family!

Instant Pot Italian Egg BitesRich, tasty and full of protein, these Instant Pot Italian egg bites will satisfy you and get you through your morning.

Tomato Tuna Melt (THM-S, Low Carb)

Talk To Me

As always, I’d love to hear from YOU!!  If you make one of my recipes and love it, let me know.  Share on my Facebook page or tag me on Instagram (@countrygirlcookin)

If you try this tomato tuna melt recipe and enjoy them, share the love!

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Tomato Tuna Melt (Low Carb, THM-S)
Yield: 6

Tomato Tuna Melt (Low Carb, THM-S)

Prep Time: 10 minutes
Cook Time: 10 minutes
Total Time: 20 minutes

This tomato tuna melt recipe will surprise you with flavors that go so well together! When you don't want a huge meal, this low carb, protein filled dish is the just the thing for your family!



  1. Preheat oven to 400 degrees.
  2. Place tomato slices on parchment lined baking sheet. Sprinkle them with salt & pepper.
  3. In medium bowl, mix tuna, mayo, onion powder and a dash of salt & pepper.
  4. Divide mixture into 6 equal portions.
  5. Top each tomato with the tuna mixture and then top it off with a slice of cheese.
  6. Bake for 5-10 minutes, or whenever cheese is melty.
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