Salads
This apple walnut tuna salad recipe transforms a classic lunch staple into something unexpectedly sophisticated—where crisp walnuts and sweet apples meet flaky tuna in perfect harmony. The secret lies in balancing textures: tender tuna, crunchy walnuts, and just enough apple to keep every bite interesting.
I developed this version after realizing how quickly store-bought tuna salad loses its appeal, and this combination keeps it exciting for weeks.
The recipe builds flavor through simple techniques: finely diced apples prevent sogginess, while toasted walnuts add depth that plain tuna salad can't match. A touch of Dijon mustard and fresh herbs ties everything together, creating a salad that's fresh, satisfying, and packed with protein.
Best of all, it comes together in under 15 minutes with just 8 ingredients—no special equipment required.
What makes this version stand out is its adaptability. Swap Greek yogurt for mayo to cut calories, or add celery for extra crunch. The apples hold up beautifully for 2-3 days in the fridge, making this an ideal meal prep solution.
Each spoonful delivers that perfect contrast of textures—creamy tuna, crisp walnuts, and slightly sweet apple—proving simple ingredients can create something extraordinary.
Serve on whole-grain crackers for a satisfying snack, or pile high on gluten-free bread for a hearty lunch. The walnuts and apples keep it interesting enough to eat straight from the bowl too.
This isn't just another tuna salad—it's a nutty, crunchy, flavor-packed upgrade that deserves a place in your weekly rotation.
Ingredients for apple walnut tuna salad
Eight ingredients transform ordinary tuna salad into a crunchy, nutty masterpiece with every bite.
| Ingredient | Amount | Notes |
|---|---|---|
| Flaked Tuna in Water 🐟 | 15 oz | High-quality, drained well |
| Red Delicious Apples 🍎 | 1 medium | Finely diced, skin on |
| Walnuts 🥜 | ½ cup | Toasted, roughly chopped |
| Greek Yogurt 🥛 | ½ cup | Plain, full-fat preferred |
| Dijon Mustard 🍯 | 1 tbsp | High-quality, smooth |
| Fresh Dill 🌿 | 2 tbsp | Chopped, stems removed |
| Fresh Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| Extra-Virgin Olive Oil 🫒 | 2 tbsp | Light, fruity variety |
| Kosher Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Freshly Ground Black Pepper 🌶️ | ¼ tsp | Freshly cracked |
The walnuts and apples are non-negotiable for that perfect texture contrast. Trader Joe's has the best pre-toasted walnuts—just chop them yourself for maximum crunch. For apples, Honeycrisp or Fuji hold up better than Red Delicious when diced, but if that's what you've got, go for it. The tuna? Wild-caught, high-quality brands like Wild Planet or Vital Choice make all the difference. Drain it well, and don't skip the flaking—whole chunks ruin the texture. Fresh dill is ideal, but dried dill at half the amount works in a pinch. Toast your walnuts in a dry pan for 3-4 minutes until fragrant—worth the extra minute!
No Greek yogurt? Plain vegan yogurt or light mayo keeps it creamy without sacrificing texture. Swap Dijon for whole-grain mustard if you prefer a different tang. The lemon juice can be bottled, but freshly squeezed brightens everything up. For extra crunch, add celery or red onion—just dice them small so they don't overpower. If you're meal prepping, hold off on adding the apples until serving to prevent sogginess. The olive oil should be light and fruity—California Extra Virgin brands work perfectly. And yes, you can make this ahead—it actually tastes better the next day as flavors meld!
Store the base mixture (everything except apples) in an airtight container for up to 4 days in the fridge. The apples? Add them fresh when ready to eat—1-2 days max in the salad. Portion into small containers for easy grab-and-go lunches. This keeps 3 days with the apples included. Freezing isn't recommended—the texture suffers. If you're making this for a crowd, double the batch and use two 8-oz containers—it's perfect for meal prep. The walnuts and apples stay crisp when stored separately, so assemble just before serving for the best experience.
Why You'll Love This Recipe
- No Chopping Chaos: I swear by this recipe because the apple and walnuts are prepped in minutes—just a quick dice and toss. Honestly, the only knife work you’ll do is slicing the apple, and even that’s forgiving. (Yes, even if you’re the kind who burns toast.)
- Sweet-Savory Magic: That Greek yogurt base keeps it creamy without heaviness, while the Dijon mustard cuts through the richness. The walnuts add crunch, and the apples? They’re the star—bright, crisp, and just sweet enough to make it feel like dessert.
- Lunch Box Hero: Pack it in wraps for a school lunch, slather it on crackers for a snack, or pile it high on toast for a quick breakfast. Between us, I’ve even used it as a filling for stuffed bell peppers when I’m lazy. It’s that adaptable.
- Budget Meal Prep: A can of tuna, a couple apples, and a bag of walnuts stretch this salad for days. No fancy ingredients, just smart swaps—swap the yogurt for mayo if you prefer, or add celery for extra crunch. It’s my go-to when groceries are tight but I still want flavor.
Step-by-step instructions for apple walnut tuna salad
Here's how to create a perfectly balanced salad with vibrant flavors and satisfying textures.
Prepare the Apples and Walnuts
Start by finely dicing the 1 medium Red Delicious Apples using a sharp chef's knife. I like to leave the skin on for added texture and nutritional benefits. Cut the apple into small, even pieces—about ¼-inch cubes—so they distribute evenly throughout the salad. Place them in a medium mixing bowl.
Next, toast the 0.5 cup Walnuts in a dry skillet over medium heat for 3-4 minutes, stirring constantly until they release their nutty aroma and turn a rich golden brown. This toasting step is crucial—it enhances their flavor and prevents them from tasting raw. Transfer the toasted walnuts to the same bowl with the apples and set aside.
Mix the Wet Ingredients
In a separate small bowl, combine the 0.5 cup Greek Yogurt, 1 tbsp Dijon Mustard, and 1 tbsp Fresh Lemon Juice. Whisk these ingredients together until smooth and fully incorporated. The yogurt should be creamy, and the mustard should be completely dissolved—no lumps allowed. This mixture forms the base of your dressing.
Slowly drizzle in the 2 tbsp Extra-Virgin Olive Oil while continuing to whisk. The oil should emulsify into the yogurt mixture, creating a silky dressing. Taste and adjust seasoning with 0.5 tsp Kosher Salt and 0.25 tsp Freshly Ground Black Pepper. The dressing should be tangy, slightly sweet, and well-balanced.
Combine All Ingredients
Add the 15 oz Flaked Tuna in Water to the bowl with the apples and walnuts. Drain the tuna thoroughly to avoid making the salad watery. Pour the yogurt dressing over the tuna and gently fold everything together using a silicone spatula. Be careful not to overmix—the tuna should remain flaked and distinct.
Finally, fold in the 2 tbsp Fresh Dill, which adds a bright, herby note that complements the richness of the tuna and walnuts. The salad should look vibrant, with visible pieces of apple, walnut, and tuna. Taste again and adjust seasoning if needed—you want a perfect balance of sweetness, tang, and saltiness.
Chill and Serve
Cover the bowl and refrigerate the salad for at least 30 minutes to allow the flavors to meld together. This chilling step is essential—it lets the apple soften slightly, the walnuts release more of their oils, and the dressing fully coats the tuna. The salad will taste even better if you let it sit for up to 2 hours.
Before serving, give the salad one final gentle fold to redistribute the ingredients. Serve it chilled on a bed of mixed greens or with crusty bread for dipping. The contrast of the crisp apples and walnuts against the creamy tuna makes every bite irresistible. Enjoy immediately for the freshest experience!
Pro Tips For Making Apple Walnut Tuna Salad
- Drain and Pat the Tuna Dry: The water in canned tuna makes the salad soggy—no one wants a mushy texture. Dump the drained tuna into a clean towel, give it a good squeeze, and let it sit for 2-3 minutes while you prep the rest. This step alone keeps your salad light and fluffy instead of a sad, waterlogged mess.
- Toast the Walnuts Low and Slow: I used to burn the walnuts every time, thinking high heat made them crispier. Wrong. Toast them in a dry skillet over medium-low heat for 5-6 minutes, stirring often, until they’re golden and fragrant. Overcooking turns them bitter—no one wants that nutty regret in their bite.
- Use Tart Apples, Not Sweet: Red Delicious apples are fine, but they’re bland in this salad. Swap in a Granny Smith or Honeycrisp instead—their sharpness cuts through the richness of the yogurt and tuna. If you’re stuck with Red Delicious, toss the diced pieces in a splash of lemon juice first to wake them up.
- Mix in the Mustard Last: Adding Dijon mustard too early makes the salad curdle. Hold off until the very end, when everything else is combined, and fold it in gently. This keeps the texture smooth and the flavors balanced—no one wants a tangy surprise in every bite.
Essential equipment for this dish
Basic Mixing Bowl
You don't need anything fancy—a medium mixing bowl with a silicone spatula is all you need to combine ingredients. I use a stainless steel bowl from OXO because it's non-reactive and easy to clean.
If you're prepping for a crowd, grab a large mixing bowl (like the Ziploc 16-cup variety) to handle double batches. 🥣
Knife and Cutting Board
A sharp chef's knife (I recommend Mercer Culinary Genesis) is essential for dicing the apple into ¼-inch cubes without tearing. Pair it with a non-slip cutting board—I love the Oya bamboo boards for their stability.
For walnuts, a small skillet (like All-Clad Stainless) is perfect for toasting without burning.
Skillet for Toasting
Toast your walnuts in a 10-inch non-stick skillet over medium heat for 3-4 minutes. A cast iron skillet (like Lodge) works too, but watch closely—walnuts burn fast. Keep a small bowl nearby to catch any stray nuts that jump. This step makes all the difference in flavor! 🥜
Measuring Tools
Precision matters here! Use a liquid measuring cup for the Greek yogurt and olive oil, and a standard measuring spoons set (like OXO Good Grips) for mustard, lemon juice, and spices. A fine-mesh strainer helps drain the tuna thoroughly—OXO's collapsible strainer is my go-to for easy cleanup.
Optional Extras
For meal prep, grab airtight containers (I use Glasslock 16-oz jars) to store the base mixture. A small whisk helps emulsify the dressing smoothly, and a microplane can zest lemon peel for extra brightness. If you're serving with crackers, a small plate and tongs make assembly easy. 🍽️
Nutrition facts
Frequently asked questions
Can I use canned tuna in oil instead of water?
Yes, but you'll need to drain it thoroughly and rinse with cold water to remove excess oil. The oil can make the salad too greasy and heavy. For best results, stick with water-packed tuna—it keeps the texture light and fluffy. If you must use oil-packed, pat it very dry with paper towels before adding.
What's the best way to keep the apples crisp in the salad?
Add the apples just before serving to prevent sogginess. If prepping ahead, store them separately in an airtight container and mix them in when ready to eat. For extra crunch, toss the diced apples with ½ teaspoon lemon juice before adding to the salad—this helps preserve their texture longer.
Can I make this recipe without Greek yogurt?
Use mayonnaise for a richer texture or vegan yogurt for a lighter option. For a dairy-free alternative, try silken tofu blended with 1 tablespoon lemon juice—it mimics the creaminess well. Just adjust the liquid ratio slightly if needed to reach the right consistency.
How long does this salad keep in the fridge?
The base mixture (without apples) stays fresh for 4 days in an airtight container. Once you add the apples, consume within 2 days for best texture. For meal prep, store the base separately and assemble just before eating. The walnuts stay crisp when stored separately too!
What's the best way to serve this tuna salad?
Try it on toasted sourdough slices, gluten-free crackers, or over a bed of arugula for a fresh twist. For a heartier lunch, pile it high in a lettuce wrap with avocado slices. The nutty crunch pairs perfectly with sharp cheddar cheese or a sprinkle of feta for extra flavor!