Keto Tuna Bun


Tuna is so fast, light, and full of flavor that it makes for the perfect Keto meal. That is why you have to try this easy and delicious recipe for a yummy Keto Tuna Bun!

What You Will Love About This Keto Tuna Bun Recipe

  • Toasty Tuna – I absolutely adore the balance of textures and tastes in thisKeto Tuna Bun  recipe! The toasty bun contrasts the creamy tuna so deliciously! 
  • Fun Lunch – Sometimes lunch can seem like a blur or boring wraps and sandwiches, but this keto-friendly bun will break up the humdrum with tons of creamy, salty, rich, and decadent flavor!
  • Quick Culinary Creation – With thisKeto Tuna Bun  recipe you can put together a lunch that tastes composed and delicious without spending all morning in the kitchen! 
  • Fish for All – Tuna is the perfect fish to introduce your kids to. It is kid-safe, mild, rich, and loaded with nutrients and this creamy tuna salad is a fish dish kids will ask for more of! 


Mixing Bowl – ThisKeto Tuna Bun  recipe is so simple that the only special equipment you need is a bowl! It’s so easy!

Medium Skillet – The bread is the most underrated part of the sandwich and with this tasty recipe the bun is the star, so grab a medium skillet to help you toast your bun!


Tuna – This easy recipe uses your favorite can of tuna to make the perfect tuna salad. Tuna is a great fish for everyone! It has lots of lean flavor and wonderful omega-3 fatty acids; plus, tuna is safe and healthy for all ages so everyone can enjoy this yummy fish!

Try to work with tuna canned in water for a more natural and less oily taste. Also, beware of overly salty tuna and use low-sodium if you want a more heart-healthy meal. 

Low-Fat Mayonnaise – Creamy and smooth low-fat mayo is a great way to make a tasty tuna salad. 

Red Onion – Red onion brings some bold color and flavor to the salad. It also has fiber and antioxidants to help boost your health!

Garlic – Fresh crushed garlic adds bold flavor to the tuna salad. Garlic is a great choice for heart health because garlic is believed to help lower blood pressure. 

Parsley – The fresh green flavor of parsley helps to round out this Keto Tuna Bun recipe. Parsley is a very low-maintenance culinary herb and a great choice to grow inside on your windowsill for fresh herbal flavor all year long. 

Lemon Juice – You cannot have fish without citrus. A bit of lemon juice helps to liven up the flavor of this fish and bring out all of its best flavors. 

Mustard – The tangy zip of mustard adds a nice earthy kick to this tantalizing tuna. 

Low-Carb Keto Bun – For thisKeto Tuna Bun  recipe, you can use your favorite homemade or store-bought keto bun to hold all the creamy tuna salad. 

Butter – A touch of this creamy fat helps grease the pan so you can toast the bun to buttery perfection. 

Red Pesto, Sriracha, Cabbage, Tomato, and Avocado – Red pesto is a tasty condiment made from sun-dried tomatoes and pine nuts. Sriracha is a balanced spicy condiment with a kick. Cabbage, tomato, and avocado add fresh veggies flavor and crunch. The magic happens when you put them all together with the tuna salad. It makes for a balanced bite of lush and fresh flavors.

These are my favorite toppings for this terrific tuna salad, but if you don’t love one just leave it off! The tuna salad is the star and these are just its backup! You can also try other toppings to make this awesome handheld your own! 

Keto Tuna Bun

Expert Notes 

  • If you forgot to check the pantry and just realized you’re out of buns, don’t panic! You can enjoy this tuna salad on low-carb crackers, lettuce leaves, or keto tortillas. Don’t forget the toppings!
  • Enjoy this Tuna Bun while it is fresh and the bun is warm. It’s the perfect weekend lunch or delicious light dinner!
  • Any extra of the terrific keto tuna salad in this Keto Tuna Bun recipe can be stored in the fridge for up to 3 days

Keto Tuna Bun

Course Lunch


Keto Tuna Bun Recipe


      For the Tuna Bun:

      • 1 can of tuna
      • 2 tbsp low-fat mayonnaise
      • 1 small red onion
      • 1 tbsp crushed garlic
      • A handful of chopped parsley
      • Juice of half a lemon
      • 1 tsp mustard
      • 1 low-carb keto bun
      • 1 tsp butter

      For the Toppings:

      • 1 tbsp red pesto
      • 1 tsp siracha
      • 2 leaves of fresh cabbage
      • 2 or 3 tbsp of the tuna freshly salade
      • A slice of tomato
      • Half an avocado sliced



      • In a medium-sized bowl, mix all the ingredients until well combined.
      • Use a spatula to push butter to coat the pan. Place buns cut side down onto the buttered pan and cook for about 1 minute until golden and toasted. Turn around and toast the other side.
      • Assemble, place the lower part of the bun on a plate and top with the red pesto, sriracha, the fresh cabbage, and scoop a couple of tablespoons of your freshly made tuna salad. Add a slice of tomato and the sliced avocado and place the top part of the bun on top.

      Enjoy and love your Pure Plate.

        Keyword Keto, Keto Tuna Bun, Low carb, Tuna Bun

        Thank You 


        Thank you so much for reading this blog! I hope you try this Keto Tuna Bun recipe and that you enjoy it as much as my family and I did! When you do make this Keto Tuna Bun, be sure to tag me on Instagram @pure_plates_recipes!

        See you soon! 


        Love, Your Pure Plate!


        Low-carb made with Love

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