This keto tuna salad is a quick and easy meal that's perfect for those following a low-carb diet. It's packed with flavor and can be whipped up in minutes, making it an ideal option for lunch or a light dinner. The combination of creamy mayonnaise, tangy dijon mustard, and fresh lemon juice creates a delicious dressing that complements the tuna perfectly.
Most of the ingredients for this keto tuna salad are commonly found in your pantry or refrigerator. However, if you don't usually keep dijon mustard or celery on hand, you might need to pick them up at the supermarket. Dijon mustard adds a unique tangy flavor that regular mustard can't quite replicate, and celery provides a satisfying crunch to the salad.

Ingredients For Keto Tuna Salad Recipe
Tuna: A protein-rich fish that serves as the base of the salad.
Mayonnaise: Adds creaminess and richness to the salad.
Dijon mustard: Provides a tangy flavor that enhances the overall taste.
Lemon juice: Freshly squeezed to add a bright, citrusy note.
Celery: Adds a crunchy texture to the salad.
Red onion: Finely chopped to add a bit of sharpness and color.
Salt: Enhances the flavors of the ingredients.
Pepper: Adds a bit of heat and depth to the salad.
Technique Tip for This Recipe
When preparing the tuna, ensure it is thoroughly drained to avoid a watery salad. For an extra burst of flavor, consider adding a pinch of paprika or a dash of hot sauce to the mayonnaise mixture. Finely chopping the celery and red onion ensures a consistent texture throughout the dish. If you prefer a creamier consistency, you can add an extra tablespoon of mayonnaise. For a more refreshing taste, try incorporating some freshly chopped parsley or dill.
Suggested Side Dishes
Alternative Ingredients
tuna - Substitute with canned salmon: Canned salmon provides a similar texture and is also rich in omega-3 fatty acids, making it a great alternative for a keto-friendly salad.
mayonnaise - Substitute with Greek yogurt: Greek yogurt is lower in fat and calories but still provides a creamy texture. Make sure to use full-fat Greek yogurt to keep it keto-friendly.
dijon mustard - Substitute with yellow mustard: Yellow mustard has a similar tangy flavor and can be used in the same quantity without altering the taste significantly.
lemon juice - Substitute with apple cider vinegar: Apple cider vinegar adds a similar acidity and tanginess, making it a good alternative for lemon juice in a keto diet.
celery - Substitute with cucumber: Cucumber provides a similar crunch and freshness, and it is also low in carbs, making it suitable for a keto diet.
red onion - Substitute with green onion: Green onions have a milder flavor and fewer carbs, making them a good substitute for red onions in a keto recipe.
salt - Substitute with sea salt: Sea salt can be used in the same quantity and provides a similar flavor profile.
pepper - Substitute with white pepper: White pepper has a slightly different but still complementary flavor, and can be used in the same quantity.
Other Alternative Recipes Similar to This Dish
How to Store or Freeze This Dish
- Store your keto tuna salad in an airtight container to maintain its freshness. This will prevent any unwanted odors from seeping in and keep the flavors intact.
- Place the container in the refrigerator. Your tuna salad can be safely stored for up to 3-4 days. Always give it a quick sniff before consuming to ensure it’s still fresh.
- If you plan to make a larger batch and want to freeze it, portion the tuna salad into individual servings. This makes it easier to thaw only what you need.
- Wrap each portion tightly in plastic wrap or aluminum foil before placing them in a freezer-safe bag or container. This double layer of protection helps prevent freezer burn.
- Label each package with the date of freezing. This will help you keep track of how long it has been stored.
- When ready to enjoy, thaw the tuna salad in the refrigerator overnight. Avoid thawing at room temperature to prevent any risk of bacterial growth.
- Give the salad a good stir after thawing to reincorporate any separated ingredients. You might want to add a bit more mayonnaise or lemon juice to freshen up the flavors.
- Avoid freezing the tuna salad for more than a month. While it will still be safe to eat, the texture and flavor may start to degrade over time.
- For the best taste and texture, consume the thawed tuna salad within 1-2 days.
How to Reheat Leftovers
Gently reheat the tuna salad in a non-stick skillet over low heat. Stir occasionally to ensure even warming, but be careful not to overcook the tuna as it can become dry.
Use a microwave-safe dish to reheat the tuna salad. Cover the dish with a microwave-safe lid or plastic wrap, leaving a small vent. Heat on medium power for 30-second intervals, stirring in between, until warmed through.
For a unique twist, spread the tuna salad on a low-carb tortilla or lettuce wrap and warm it in a preheated oven at 350°F (175°C) for about 5-7 minutes. This method adds a delightful crispiness to the wrap.
If you prefer a cold option, simply let the tuna salad sit at room temperature for about 15-20 minutes before serving. This allows the flavors to meld and the salad to lose its chill without needing to be reheated.
Best Tools for This Recipe
Can opener: To open the can of tuna.
Mixing bowl: To combine all the ingredients together.
Fork: To flake the tuna and mix the ingredients thoroughly.
Measuring spoons: To measure the mayonnaise, dijon mustard, and lemon juice accurately.
Knife: To chop the celery and finely chop the red onion.
Cutting board: To provide a surface for chopping the celery and red onion.
Spoon: To scoop and mix the ingredients.
Refrigerator: To chill the tuna salad if desired before serving.
How to Save Time on Making This Recipe
Use pre-chopped veggies: Save time by buying pre-chopped celery and red onion from the store.
Opt for lemon juice concentrate: Instead of squeezing fresh lemon juice, use bottled lemon juice for quicker preparation.
Mix in the can: Combine the tuna, mayonnaise, dijon mustard, and lemon juice directly in the tuna can to save on cleanup.
Batch prep: Make a larger batch of tuna salad and store it in the fridge for quick meals throughout the week.
Use a food processor: Quickly chop the celery and red onion using a food processor.

Keto Tuna Salad Recipe
Ingredients
Main Ingredients
- 1 can Tuna drained
- 2 tablespoon Mayonnaise
- 1 tablespoon Dijon Mustard
- 1 tablespoon Lemon Juice freshly squeezed
- 1 stalk Celery chopped
- 1 tablespoon Red Onion finely chopped
- to taste Salt and Pepper
Instructions
- In a mixing bowl, combine the tuna, mayonnaise, Dijon mustard, and lemon juice.
- Add the chopped celery and red onion. Mix well.
- Season with salt and pepper to taste. Serve immediately or chill in the refrigerator before serving.
Nutritional Value
Keywords
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