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The Best Mediterranean Keto Tuna Salad

This Mediterranean Keto Tuna Salad is something different! It’s delicious and it’s got some surprising ingredients in it, making this the perfect keto tuna salad for sandwiches (on low-carb bread), putting on top of keto crackers, serving with avocado – like I do in this recipe – or just out of the bowl on its own. Follow me, Chef Jenn, along as I show you all my tips and tricks to make the best keto tuna salad recipe ever!

mediterranean tuna salad on a serving plate
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This isn’t your typical gloppy mayonnaise-y tuna salad – in this Mediterranean Tuna Salad, a humble can of tuna gets an upgrade!

What You Need to Make Mediterranean Tuna Salad

  • A mixing bowl – these mixing bowls are amazing, indestructible, and will last a lifetime
  • Solid knife for chopping – this Henkles knife is a great value for the quality
  • Cutting board

Ingredients to Make This Tuna Salad

  • Tuna
  • Mayonnaise
  • Sour cream
  • Feta cheese – use ricotta salata if you prefer
  • Red bell pepper
  • Capers
  • Shallot – shallots are like a mild onion but are actually in the garlic family. Use green onion if you have no shallots.
  • Parsley
  • Salt and pepper
  • Avocados

What Kind of Tuna Should You Use?

Tuna packed in water, tuna packed in oil. Tuna with herbs and seasonings. White albacore tuna. And a million different brands. It can be confusing, but here’s the bottom line: whatever tuna you like or have on hand will probably work in this recipe!

Tuna in water – just drain off the water and give it to the cat.

Tuna packed in oil – drain and discard the oil.

The only tuna I’d be reluctant to use is tuna with seasonings because you don’t want the flavor to conflict with the recipe.

mediterranean tuna salad in avocado boats

How to Make Gluten Free Tuna Salad

  1. Drain the tuna and put it in a bowl. Add the mayo, sour cream, crumbled feta, chopped red bell pepper, shallot, parsley, and salt and pepper.
  2. Mix well.
  3. Cut the avocados and pop out the seed. Serve each half an avocado with 1/4 cup of Mediterranean Tuna Salad.
  4. Enjoy!

Chef’s Tips to Make This Low-Carb Tuna Salad

  • Don’t like capers? Substitute some chopped olives.
  • Don’t have shallots? Use green onion.
  • Don’t have fresh parsley? Use 1 tsp dried parsley.
  • Don’t have sour cream or mayo? Use the full amount of whichever you have.
  • Don’t have a can of tuna? Use a can of well-drained chicken!

How to Serve With Mediterranean Keto Tuna Salad

I like to enjoy this salad inside the cavity of a nice, fresh avocado. That makes a filling meal, or you can use this tuna salad in a lettuce cup, in a low-carb wrap, on top of your favorite Keto Crackers, or enjoy it as a part of composed salad plate along with this Southern Chicken Salad and Shrimp Salad.

Will This Tuna Salad Recipe Freeze?

Sadly, no. The sour cream and mayo don’t freeze well and this recipe will lose texture and liquid through the freezing and defrosting process.

This dish is best eaten fresh.

How Long Will This Mediterranean Keto Tuna Salad Keep?

It is tuna, which has a shorter shelf life than some other proteins, so try to eat it within 2-3 days.

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5 from 5 votes

Mediterranean Tuna Salad

Made from humble ingredients, this Mediterranean Tuna Salad is flavorful, easy, and fabulous!
Course Appetizer, Keto Lunches
Cuisine American, Mediterranean
Keyword avocado, canned tuna, easy seafood recipe, keto lunch, keto seafood recipes, seafood, tuna
Prep Time 10 minutes
Total Time 10 minutes
Servings 2 servings
Calories 243kcal
Author Chef Jenn


  • 1 can tuna drained
  • 2 tbsp sour cream
  • 2 tbs mayonnaise
  • 1 tbsp capers roughly chopped
  • 1 tbsp shallot finely diced
  • 2 tbsp bell pepper finely diced
  • 1 tbsp parsley chopped
  • 2 tbsp feta crumbled


  • Drain the tuna and put it into a bowl. Add the remaining ingredients and mix well. Season with a touch of salt and pepper if desired.
  • Enjoy!


I’ve served this salad with avocado, but haven’t included the avocado in the nutritional info in case you want to enjoy the tuna salad a different way.


Serving: 0.5cup | Calories: 243kcal | Carbohydrates: 3g | Protein: 20g | Fat: 17g | Saturated Fat: 6g | Cholesterol: 58mg | Sodium: 618mg | Potassium: 172mg | Fiber: 1g | Sugar: 2g | Vitamin A: 646IU | Vitamin C: 14mg | Calcium: 111mg | Iron: 2mg | Net Carbohydrates: 2g

A Note on Nutritional Information

Nutritional information for this recipe is provided as a courtesy and is calculated based on available online ingredient information. It is only an approximate value. The accuracy of the nutritional information for any recipe on this site cannot be guaranteed. Erythritol carbs (sugar substitutes) are not included in the carbohydrate counts as they have been shown not to impact blood sugar, and they have zero calories and zero carbs. Net carbs are the total carbs minus fiber.

about jenn

Hi, I’m Jenn!

I’m a cookbook author (Keto Soup Cookbook and Keto Diabetic Cookbook and Meal Plan) as well as a retired chef, recipe developer, and writer of this blog (that’s a lot of hats!). I embarked on a journey to create foodie-worthy Keto-friendly meals that any home cook can be proud of! No matter if you’re low-carb, no-carb, dirty, or strict Keto, there are recipes in Keto Cooking Wins for you and your family. Read more...

11 thoughts on “The Best Mediterranean Keto Tuna Salad”

  1. Such a quick, delicious, and healthy meal! Love the avocado bowl – the saltiness of the tuna with the creamy sweet avocado is a great balance!

  2. This was such a great tuna salad! I love flavors added to it and the avocado was the perfect base!! Thank you

  3. 5 stars
    I’m always looking for new ways to serve tuna, so this is right up my street! So full of flavour!

  4. 5 stars
    My husband will love this recipe. He’s been trying the keto diet and has been looking for new ways to use tuna

  5. 5 stars
    Love this tuna salad! So creamy and delicious and such a great idea to serve it in an avocado. YUM!

  6. 5 stars
    For some reason I’ve never though about serving tuna salad in avocado halves, but what a great idea!

  7. 5 stars
    Such a unique and unexpected recipe with a beautiful presentation! Easily, a new favorite recipe in our home!

5 from 5 votes

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