Low Carb Avocado Tuna Melts are the perfect healthy eating solution. Made with creamy avocado, and then piled over a juicy thick cut tomato and topped with cheese.

I like to mix some onion with my tuna because it adds a bit of crunch. Since I can't stand mayonnaise, I love using avocado to make the tuna creamy and so delicious. I usually add a tiny bit of Greek yogurt as well, which just adds to the creamy texture. When you make these low carb avocado tuna melts, you can eat a whole sliced tomato topped with a whole package (3 ounces) of tuna. I like to use the no salt added packages of white albacore tuna, but you can use whatever brand you like best.
Why these Low Carb Avocado Tuna Melts are healthy:
- We replace the high cholesterol and high sodium condiment mayonnaise with heart healthy Avocado and protein packed Greek yogurt. Avocados are a great source of vitamins C, E, K, and B-6, as well as riboflavin, niacin, folate, pantothenic acid, magnesium, and potassium.
- There are 30 grams of protein in these Low Carb Tuna Melts, making these a great option for lunch or dinner.
- With only 12 grams of carbs, this recipe makes it easy to stick to a reduced low carb diet.
- White Albacore Tuna is full of omega-3 fatty acids, protein, and is actually low in sodium if you opt for lower sodium/no salt added brands.
- If you aren't cutting carbs, check out this delicious No Mayo Avocado Tuna Melt with delicious crispy grilled bread!
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Low Carb Avocado Tuna Melts are the perfect healthy eating solution. Made with creamy avocado, and then piled over a juicy thick cut tomato and topped with cheese.
- 6 ounces no salt added white albacore tuna, drained
- 2 TBS chopped onion
- ⅛ teaspoon salt
- ⅛ teaspoon black pepper
- 1 avocado, cubed
- 2 TBS plain greek yogurt
- 2 ounces grated cheddar cheese
- 2 large tomatoes, thickly sliced (3-4 slices per tomato)
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Preheat oven on HIGH broil.
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In a medium bowl, mix tuna, onion, pepper, salt, avocado, and greek yogurt until completely combined.
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Arrange tomato slices on a wire rack on top of a baking sheet. Scoop ¼ cup of tuna mixture on top of each tomato. Top evenly with cheese.
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Place into oven, broil 3-5 minutes or until cheese is melted through. Watch closely to avoid burning.
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Serve immediately.
Recipe Video
Like Healthy Recipes as much as I do? Checkout these other recipes from Domestic Superhero:
One Skillet Ginger Soy Chicken
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- Allyson









Amy @ Little Dairy on the Prairie says
What a great way to make these low carb!
Demeter says
These would make a great lunch option! Loving the avocado!
eat good 4 life says
Such a great idea. I wish I could have a taste of it right now. Right up my alley!
Jessica |Novice Chef says
This ism idea of perfect lunch!
Patricia @ Grab a Plate says
How pretty (and delicious) do these look! I love that there is no mayo involved - a nice upgrade!
Becca says
Will the avocado turn brown if you make these ahead, say for lunch meal prep?
Allyson says
I haven't tried it. If you do, i would suggest covering the salad with plastic wrap and pressing it hard up against the salad so that there is no air between the wrap and the salad. You could also add a bit of lemon juice to prevent browning. Let me know if you try it!
Shelly says
I’m enjoying this delicious meal as I type this. Very yummy 😋
Allyson says
SO good, right?! So glad you liked it!