Keto Tuna Salad is the kind of recipe every low-carb dieter needs in their back pocket. It’s creamy, crunchy, and loaded with protein—yet it comes together in minutes using ingredients you probably already have in your kitchen. Whether you’re looking for a quick lunch or a make-ahead meal for the week, this easy tuna salad hits the mark without kicking you out of ketosis.
In this post, we’re covering everything you need to know about making the perfect keto tuna salad. From the best ingredients to use (hint: skip the sweet relish), to how to swap out mayo if you’re not a fan, to creative low-carb ways to serve it—we’ve got it all. You’ll also learn about the nutritional benefits, storage tips, and common pitfalls to avoid.
Looking for more ideas? Don’t miss our Quick Keto Pizza Sauce for a zesty dinner pairing or Keto Bagels if you’re craving something bready (without the carbs).
Let’s dive in and build your new favorite lunch staple!
Table of Contents
Introduction to Keto Tuna Salad
What is Keto Tuna Salad?
Keto tuna salad is a naturally low-carb dish made from a simple combo of canned tuna, mayonnaise, and crisp, fresh vegetables like celery, onions, and pickles. It’s a nostalgic, feel-good meal that just happens to be keto-approved. No carb substitutions or special ingredients needed.
What makes this a keto superstar? It’s all in the macros. This dish is high in healthy fats, moderate in protein, and low in carbohydrates—making it ideal for staying in ketosis while enjoying something familiar and filling.
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Keto Tuna Salad
- Total Time: 40 minutes
- Yield: 4 servings 1x
Ingredients
2 cans tuna (drained)
½ cup mayonnaise
1 stalk celery, diced
2 tbsp red onion, minced
2 tbsp dill relish or chopped pickles
1 tbsp lemon juice
½ tsp garlic powder
¼ tsp dried dill
Salt and pepper to taste
Instructions
In a bowl, mix tuna, celery, onion, and pickles.
In another bowl, whisk mayo, lemon juice, dill, garlic powder, salt, and pepper.
Combine both bowls and stir gently.
Chill for 30 minutes or serve immediately.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Cuisine: American
Nutrition
- Calories: 250 kcal
- Sugar: 0g
- Fat: 20g
- Carbohydrates: 1.5g
- Fiber: 0.5g
- Protein: 18g
If you’re tired of over-engineered keto meals, this one is refreshingly simple and customizable. You can dress it up with avocado or eggs, or keep it classic with just the basics.
Why It’s a Staple in Low-Carb Diets
There are a few reasons keto tuna salad shows up again and again in low-carb meal plans:
- It’s incredibly quick to make. You can have lunch ready in under 10 minutes.
- It’s budget-friendly. Canned tuna is affordable and shelf-stable.
- It’s versatile. Serve it in lettuce wraps, mini peppers, hollowed-out tomatoes—or just eat it with a fork.
- It’s meal-prep approved. It holds up for several days in the fridge without losing texture or flavor.
This simple salad fits right into your keto lifestyle without extra planning or expensive ingredients. Discover great ideas like Keto Cheese Popcorn if you want a savory, crunchy snack to go with it.
Ingredients that Make a Perfect Keto Tuna Salad
The Best Type of Tuna for Keto (Canned Tuna vs. Fresh)
When it comes to crafting the perfect keto tuna salad, the type of tuna you use really matters. While both canned and fresh tuna can be keto-friendly, most keto home cooks prefer canned tuna for its convenience and shelf stability.
Canned Tuna Options
- Solid White Albacore: Firm texture and mild flavor. Great for a chunky, hearty salad.
- Chunk Light Tuna: Softer and flakier. It blends more easily with creamy dressings.
For keto, always choose tuna packed in water or olive oil. Avoid varieties in soy oil or flavored cans with added sugar or starches. Read the label to be sure there are no added carbs.
Fresh tuna can be grilled or seared and flaked into the salad, but it takes more prep and loses that nostalgic “classic tuna salad” texture.
Tip: Drain your tuna well before mixing—excess moisture will water down your dressing.
Keto-Friendly Add-Ins: Celery, Onion, and Pickles
The magic of keto tuna salad isn’t just in the tuna—it’s in the texture and flavor boosters you mix in. Here are the go-to low-carb add-ins that bring crunch and zest without sabotaging your macros:
| Ingredient | Net Carbs (per serving) | Why It Works |
|---|---|---|
| Celery | ~0.5g per stalk | Crunchy, fresh, classic pairing with tuna |
| Red Onion | ~1g per tablespoon | Adds bite, a little sweetness |
| Dill Pickles or Relish | ~0.5g per tbsp | Brings briny tanginess without sugar |
| Hard-Boiled Eggs | 0.6g per egg | Optional, but adds protein and creaminess |
| Chopped Jalapeños | ~0.5g per tbsp | Great for heat lovers |
Stay away from sweet pickle relish (loaded with sugar) or processed salad mixes with hidden starches.
If you want to get creative, consider stirring in:
- Chopped olives
- Diced avocado
- Capers
- Crumbled bacon
Each of these keeps your salad keto while giving it a gourmet twist.
Looking for a cozy keto side to pair with this dish? Don’t miss our Keto Sweet Potato Casserole—it’s surprisingly low-carb!
The Creamy Keto Tuna Salad Dressing
Classic Mayo-Based Dressing (Is It Keto?)
The creamy, comforting texture of a keto tuna salad depends on one key ingredient—mayonnaise. Good news: mayo is 100% keto-approved, as it’s high in healthy fats and contains zero carbs when made with clean ingredients.
Here’s what to look for in a keto-friendly mayo:
- Made with avocado oil, olive oil, or coconut oil
- Contains no added sugars or fillers
- Free from vegetable oils like soy or canola
Basic Keto Tuna Salad Dressing Recipe:
- ½ cup full-fat mayonnaise
- 1 tablespoon fresh lemon juice
- ½ teaspoon garlic powder
- ¼ teaspoon dried dill
- Salt and pepper to taste
Whisk all ingredients in a bowl until smooth. This simple blend gives your salad a rich, tangy base that ties together all the textures and flavors. It’s what gives keto tuna salad its satisfying mouthfeel without compromising on carbs.
Don’t miss our Keto Bagels if you want a keto bread-like base for your tuna salad sandwich.
Mayo Alternatives: Greek Yogurt, Avocado & More
Not a fan of mayonnaise? You’re not alone. Luckily, you’ve got options that keep things low carb without losing the creamy texture.
| Substitute | Carbs (per 2 tbsp) | Why It Works for Keto |
|---|---|---|
| Greek Yogurt | 1–2g | High in protein, tangy flavor, creamy texture |
| Mashed Avocado | ~2g | Adds healthy fats, fiber, and color |
| Sour Cream | ~1g | Slightly tangy and thick, great for mixing |
| Keto Ranch | ~1g | Adds herby flavors and creaminess |
You can replace all or just part of the mayo. For example, try half Greek yogurt and half mayo for a balanced taste and macro profile.
Pro Tip: Always choose plain, full-fat alternatives to avoid hidden sugars and keep your dressing keto-approved.
These swaps can also help reduce calories or add extra nutrients, depending on your dietary goals.
Want more snack ideas to serve with this salad? Discover great ideas like Keto Cheese Popcorn, the crunchy companion every keto meal deserves.
How to Make Keto Tuna Salad Step-by-Step
Prep & Mix Techniques for Best Flavor
Making a delicious keto tuna salad takes just minutes, but a few smart techniques can elevate it from good to great. Here’s how to do it step-by-step.
Step 1: Drain the Tuna Well
Start by draining two 5-ounce cans of tuna (in water or olive oil). Press out as much liquid as possible so your salad doesn’t end up watery. Place the tuna in a medium mixing bowl and use a fork to gently break it into flakes.
Step 2: Chop the Veggies
Finely dice:
- 1 celery stalk
- 2 tablespoons red onion
- 2 tablespoons dill pickles or sugar-free relish
These ingredients add crunch and zip without kicking you out of ketosis.
Step 3: Make the Dressing
In a separate bowl, whisk together:
- ½ cup mayo (or a mix of mayo + Greek yogurt)
- 1 tablespoon lemon juice
- ½ teaspoon garlic powder
- ¼ teaspoon dried dill
- Salt & pepper to taste
Taste and adjust your seasonings if needed.
Step 4: Combine Everything
Pour the dressing over the tuna and chopped veggies. Mix gently with a spoon or spatula until all ingredients are evenly coated. Avoid overmixing—you want to keep some texture.
Optional Add-Ins:
- 1 hard-boiled egg, chopped
- ¼ avocado, mashed
- Dash of hot sauce for heat
- A pinch of smoked paprika for depth
Tip: Let the salad chill in the fridge for 30–60 minutes before serving. It allows the flavors to meld and makes it extra refreshing.
Tips for Making It Ahead or in Batches
Keto tuna salad is perfect for meal prep. Here’s how to make it work all week:
- Refrigerate in an airtight container and use within 4 to 5 days.
- No soggy salad: Keep wet ingredients like pickles or lemon juice separate and mix just before eating if making in large batches.
- Portion control: Divide into 4–5 single-serve containers for grab-and-go lunches.
Pro Tip: Wrap each portion in a lettuce leaf or low-carb wrap to keep it fresh and separate until you’re ready to eat.
Don’t miss our Keto Bagels if you want to try sandwiching your tuna salad without the carbs!
Creative and Delicious Keto Tuna Salad Serving Ideas
Lettuce Wraps, Mini Peppers, Chaffles, & Tomatoes
One of the best things about keto tuna salad is how versatile it is. You don’t need bread to enjoy it—there are tons of low-carb, creative ways to serve it that make every meal feel new.
1. Lettuce Wraps
Crisp, cold lettuce leaves (like romaine or butter lettuce) make the perfect low-carb wrap. Just scoop in a serving of tuna salad and fold like a taco.
2. Mini Sweet Peppers
Cut mini sweet peppers in half lengthwise, remove the seeds, and fill them with tuna salad. They’re crunchy, colorful, and great for snacking or appetizers.
3. Chaffles (Cheese Waffles)
Use your mini waffle maker to make quick keto chaffles, then sandwich tuna salad between them for a high-fat, low-carb “bread.”
4. Avocado Boats
Halve the avocado, discard the pit, and spoon the tuna salad directly into the center. It’s rich, filling, and full of healthy fats.
5. Hollowed-Out Tomatoes
For a fresh variation, scoop out the insides of large tomatoes and stuff them with keto tuna salad. It’s like a breadless sandwich, but juicier!
6. Cucumber Rounds
Slice cucumbers into thick rounds and top each slice with a dollop of tuna salad for a bite-sized, crunchy snack.
Pro Tip: Want something sweet on the side that stays keto? Don’t miss our Keto Sweet Potato Casserole—the perfect contrast to a savory salad.
What to Avoid (Bread, Crackers, Sugary Condiments)
While the options above keep your carb count low, there are a few things to avoid if you want to stay in ketosis:
| Food Item | Why Avoid It in Keto |
|---|---|
| White/Wheat Bread | High in carbs and sugars |
| Traditional Crackers | Often contain hidden starches |
| Sweet Pickle Relish | Loaded with added sugars |
| Salad Dressings with Sugar | Even “light” dressings can spike insulin |
| Wraps/Tortillas (Non-Keto) | One tortilla can have 20g+ net carbs |
Instead, go for keto-friendly condiments and carb-free bases. Always read labels—even products labeled “healthy” can be full of hidden sugars.
Want a crunchy low-carb snack after your salad? Learn more about Keto Cheese Popcorn—it’s a fan favorite!
Nutritional Breakdown and Keto Macros
Carbs, Protein, and Fat Ratio in Keto Tuna Salad
Understanding the macros in your keto tuna salad is key to keeping your diet on track. Fortunately, this dish fits beautifully into the ketogenic framework—it’s low in carbs, rich in fats, and provides enough protein to keep you satisfied without kicking you out of ketosis.
Here’s the approximate nutritional breakdown per serving (based on a 5-serving batch):
| Nutrient | Amount |
|---|---|
| Calories | 220–250 kcal |
| Fat | 18–22g |
| Protein | 14–18g |
| Net Carbs | 1.5–2g |
| Fiber | ~0.5g |
These numbers may vary depending on the type of mayo or mix-ins used (avocado, eggs, etc.). Always check your specific ingredients for exact macros.
The low net carbs (under 2g per serving) make it an ideal lunch option for staying in ketosis while still enjoying something flavorful and filling. Plus, the high-fat content helps keep you full for longer periods—so you’re less likely to snack between meals.
Looking for a delicious, low-carb way to complement this salad? Try pairing it with our Quick Keto Pizza Sauce on a chaffle or zucchini base for a full meal.
Portion Control and Caloric Value
While keto tuna salad is rich in nutrients and healthy fats, it’s still important to manage portions if you’re watching your calorie intake. Overdoing the mayo or cheese add-ins can easily spike calories without you realizing it.
Tips to manage portions:
- Stick to ½ to ¾ cup servings if you’re counting calories
- Pre-portion meals into containers for the week
- Use a kitchen scale if tracking macros strictly
Want to lighten it up a little? Replace half the mayo with Greek yogurt for a protein boost and lower calorie count, or add more chopped celery to bulk up your salad without adding calories.
Tip: Don’t forget hydration. Tuna can be salty, so balance it out with plenty of water or keto-friendly drinks.
Customizations and Variations
Spicy Tuna Salad, Avocado Twist, Egg Add-Ons
One of the reasons keto tuna salad is a long-time favorite is because it’s so easy to personalize. Whether you’re craving a little heat, creamier texture, or extra protein, you can tweak the basic recipe in dozens of ways—without adding carbs.
1. Spicy Keto Tuna Salad
Add a little kick to your classic tuna mix with:
- 1 tsp hot sauce (sugar-free)
- ½ tsp cayenne pepper
- Diced jalapeños or banana peppers
This spicy version pairs beautifully with a cooling lettuce wrap or slices of cucumber.
2. Avocado Tuna Salad
Creamy, rich, and packed with fiber, avocado makes an excellent addition or substitution for mayo:
- Mash ¼ to ½ a ripe avocado per serving
- Mix with lemon juice to prevent browning
- Blend with mayo or Greek yogurt for extra richness
It’s also a heart-healthy fat that boosts satiety.
3. Hard-Boiled Eggs
Eggs add protein, texture, and substance:
- Dice 1–2 hard-boiled eggs into the salad
- Or layer slices of egg on top for presentation
This variation works well for meal prepping protein-packed lunches.
Want more creamy, hearty ideas? Don’t miss our Keto Sweet Potato Casserole—it’s a favorite among low-carb comfort food lovers.
Low-Calorie vs. High-Fat Options
Depending on your personal goals—whether you’re focused on fat intake or watching calories—there are easy ways to adjust your keto tuna salad:
| Goal | What to Do |
|---|---|
| Lower Calories | Use Greek yogurt instead of mayo; add more celery |
| Boost Fats | Add avocado, olive oil, or a tablespoon of MCT oil |
| Increase Protein | Mix in egg whites, use tuna in water, and go light on fats |
| Maximize Flavor | Add mustard, smoked paprika, or a squeeze of lime juice |
You can also sprinkle in some cheese (like shredded cheddar or crumbled feta) for extra texture and richness—but be mindful of salt content.
Discover more high-fat, low-carb snacks in our roundup—like Keto Cheese Popcorn—perfect for snacking between meals.
Storage, Meal Prep & Shelf Life Tips
How to Store Keto Tuna Salad Without It Getting Watery
Storing your keto tuna salad properly ensures it stays fresh and creamy, not soggy. Since this salad uses moisture-heavy ingredients like mayo and tuna, proper storage is key to preserving taste and texture.
Best Storage Practices:
- Use airtight containers to keep the keto tuna salad from drying out or absorbing fridge odors.
- Drain your tuna thoroughly before mixing to minimize extra liquid.
- Add wet ingredients last if prepping multiple days in advance.
- Line containers with a dry paper towel to absorb excess moisture under the lid.
Chilling your keto tuna salad also helps the flavors develop. It’s usually even better the next day after the seasonings settle into the tuna and mayo mixture.
Looking for a make-ahead lunch option? This keto tuna salad recipe is meal prep gold—quick, cold, and keeps you in ketosis all week.
Meal Prep Safety for Seafood-Based Keto Meals
Because keto tuna salad contains fish and mayonnaise, safe food handling is essential. Store the salad between 35°F–40°F, and don’t leave it out for more than 2 hours.
| Storage Guide | Recommendation |
|---|---|
| Refrigeration | Up to 4–5 days in an airtight container |
| Freezing | Not recommended (mayo texture breaks) |
| Travel | Use insulated bags or cold packs |
Also, if you include eggs or avocado in your keto tuna salad, eat those portions within 2–3 days to maintain freshness and avoid spoilage.
Pro tip: Pre-portion your keto tuna salad into meal containers and pair each with low-carb sides for effortless lunch planning.
Common Mistakes to Avoid
Even though keto tuna salad is simple, small missteps can ruin the flavor or texture. Avoid these mistakes to keep your salad fresh, balanced, and keto-approved.
Overmixing the Keto Tuna Salad
Overmixing breaks down the tuna and makes the salad too mushy. A great keto tuna salad has texture—small flakes of tuna, crunchy celery, and little bursts of pickle or onion.
What to do instead:
- Fluff the tuna gently with a fork
- Fold in dressing and veggies slowly
- Avoid mashing the mix too hard
Keeping a slightly chunky texture makes your keto tuna salad feel hearty and homemade.
Using the Wrong Tuna or High-Carb Ingredients
Not all tuna is created equal. For a proper keto tuna salad, always use tuna in water or olive oil with no added sugars or flavorings.
Avoid these:
- Flavored or sweetened canned tuna
- Mayo with added sugar
- Sweet pickle relish (opt for dill instead)
Instead, build your keto tuna salad recipe with clean, carb-free ingredients to support ketosis.
Forgetting to Watch Portion Sizes
Keto tuna salad is healthy and satisfying, but it’s calorie-dense due to the mayo. Mind your portions if you’re tracking calories along with carbs.
Use:
- Measuring cups or food scale
- Lettuce wraps or cucumber boats to control servings
Even better, use this keto tuna salad for meal prep so your portions are set in advance.
CONCLUSION: Keep Keto Tuna Salad on Repeat
There’s a reason keto tuna salad remains a favorite among low-carb eaters—it’s easy, affordable, and packed with flavor. You don’t need fancy ingredients or complicated techniques. Just canned tuna, creamy mayo, crunchy veggies, and your favorite seasonings.
Whether you’re serving it in lettuce wraps, stuffing it in sweet peppers, or enjoying it straight out of the bowl, this keto tuna salad recipe fits perfectly into your low-carb lifestyle. It’s also a meal-prep lifesaver for busy weeks.
If you’re looking for a high-fat, low-carb lunch that doesn’t require cooking, keto tuna salad is your go-to.
For more meal ideas to pair with this classic, don’t miss our Keto Bagels—they’re the perfect base for a keto tuna melt variation.
Keep this recipe on rotation, customize it your way, and enjoy the comfort of a keto tuna salad that just works.
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FAQs
Is canned tuna OK on keto?
Yes, canned tuna is absolutely keto-friendly. It’s high in protein, low in carbs, and contains healthy fats—especially if packed in olive oil. Just be sure to check the label for added ingredients. Avoid tuna packed in soy oil or flavored varieties that may contain sugar or starch.
Can I eat tuna with mayo on keto?
Definitely. Tuna with mayonnaise is a classic keto combination. Full-fat mayo made with clean oils like avocado or olive oil is perfect for a low-carb diet. It adds flavor, moisture, and the high-fat content that supports ketosis. Just skip any mayo brands with added sugars or processed seed oils.
What can you use instead of mayonnaise in tuna salad?
If you’re not into mayo, there are several keto-friendly alternatives:
Greek yogurt (plain, full-fat) for a tangy, creamy base
Mashed avocado for a heart-healthy fat boost
Sour cream or keto ranch dressing for added flavor
Each of these keeps your salad creamy while staying within keto macros.
Can I eat mayonnaise in keto?
Yes, mayonnaise is a staple in many keto kitchens. It’s high in fat and contains zero carbs—just make sure you’re choosing a brand that uses healthy oils and no sugar. Better yet, make your own at home with egg yolks, lemon juice, and avocado oil.
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