Tuna Salad Recipe With Egg And Mustard: Rich and Tangy Balance in Every Bite

This tuna salad recipe with egg and mustard delivers the perfect balance of creamy richness and sharp tang—ideal for sandwiches, crackers, or a protein-packed side.

The secret lies in the ratio of mayo to mustard (equal parts) and finely chopped hard-boiled eggs, which add texture and depth without overpowering the tuna's natural flavor. I developed this version after years of trial and error, ensuring every bite stays moist and flavorful, not dry or bland.

The process is straightforward but requires patience for the best results. You'll start by flaking canned tuna and mixing it with finely chopped eggs, then gradually incorporate mayo, Dijon mustard, and a touch of lemon juice for brightness.

For extra crunch, I recommend adding finely diced celery and red onion, which mellow as the salad chills. The key is letting it rest in the fridge for at least 30 minutes—this allows flavors to meld and the eggs to absorb the tangy dressing.

What you'll end up with is a tuna salad that's creamy yet light, with a bold mustard kick that cuts through the richness. The eggs add a subtle protein boost and silky texture, while the celery and onion provide freshness.

This version is perfect for pescatarians or anyone looking for a meat-free option, yet it's hearty enough to satisfy as a main dish or side. Serve on toasted bread, with crackers, or as a filling for lettuce wraps.

For extra versatility, try adding a pinch of smoked paprika or fresh dill for a different flavor profile. The salad keeps well in the fridge for up to 3 days, making it a great option for meal prep.

Whether you're hosting a lunch gathering or simply craving a classic, this tuna salad delivers every time.

Ingredients for tuna salad recipe with egg and mustard

Nine simple ingredients transform into the creamiest, tangiest tuna salad you'll ever make.

The tuna makes all the difference here—high-quality brands like Wild Planet or Starkist in water keep things light and fresh. I always grab the solid white albacore for extra richness. Eggs? Fresh, organic eggs from the grocery store's refrigerated section are ideal, but any will do if you boil them yourself. The mayo is non-negotiable: Hellmann's or Duke's are my go-tos, but any full-fat mayo works. Dijon mustard adds that signature tang—Maille or Amora are great, but even the basic grocery store brand gets the job done.

No Dijon mustard? Yellow mustard at half the amount works in a pinch, but you'll lose some depth. Fresh dill is ideal, but dried dill at one-third the amount is fine if you're in a hurry. The celery and onion can be swapped for green onions or scallions if you prefer a milder flavor. Want extra crunch? Add 1 tbsp finely chopped pickles—trust me, it sounds weird but it works. The smoked paprika is optional but adds a smoky depth that makes this salad stand out. If you're feeling fancy, a pinch of cayenne pepper adds heat without overpowering.

This salad tastes even better after it's chilled for at least 30 minutes, so plan ahead. Store in an airtight container in the fridge for up to 3 days. I like to portion it into small containers so I can grab just what I need for sandwiches or crackers. If you make a big batch, freeze half for another time—it keeps well for up to 1 month. The eggs will absorb the flavors beautifully, making every bite richer and more balanced.

Step-by-step instructions for tuna salad with egg and mustard

This rich, tangy tuna salad comes together in minutes with the perfect balance of textures and flavors.

In a large mixing bowl, combine the 2 cans drained tuna in water with the 0.5 cup mayonnaise and 0.5 cup Dijon mustard. Use a fork or spatula to gently fold everything together until fully incorporated. The mixture should be smooth but still slightly chunky from the tuna.

Here's the thing—don't overmix. You want to preserve some texture from the tuna while still creating a cohesive blend. The Dijon mustard adds that signature tang that makes this salad stand out from basic versions. If the mixture feels too thick, you can add a teaspoon of water later to loosen it.

Add the 1 tablespoon fresh lemon juice, 0.25 cup finely diced celery, 0.25 cup finely diced red onion, and 2 tablespoons chopped fresh dill to the bowl. Stir everything together until the vegetables are evenly distributed throughout the mixture.

The celery and red onion add wonderful texture and a subtle crunch, while the lemon juice brightens up the whole dish. I like to taste as I go—this is where you can adjust the seasoning. If it needs more acidity, add a little more lemon juice. If it needs more depth, we'll add the smoked paprika in the next step.

In a separate small bowl, combine the 2 hard-boiled eggs that have been finely chopped. Add these to the tuna mixture along with the 0.5 teaspoon salt, 0.25 teaspoon black pepper, and 0.25 teaspoon smoked paprika. Gently fold everything together until the eggs are fully incorporated and the seasonings are evenly distributed.

The eggs add richness and protein, while the smoked paprika gives the salad that extra depth of flavor. This is where the magic happens—the combination of the creamy eggs, tangy mustard, and rich tuna creates that perfect bite. Mix just until combined so you don't break up the eggs too much.

Cover the bowl with plastic wrap or a lid and refrigerate for at least 30 minutes to allow the flavors to meld together. This chilling time is crucial—it lets all the ingredients work together and gives the salad time to develop its full flavor profile.

After chilling, give the salad another taste and adjust the seasoning if needed. If it needs more salt, add a pinch at a time. If it needs more tang, add another teaspoon of lemon juice. The salad should be perfectly balanced—creamy from the mayo and eggs, with a nice bite from the mustard and fresh herbs.

Once the salad is perfectly seasoned and chilled, it's ready to serve. This makes about 4 servings—perfect for a lunch with crackers, a sandwich filling, or a light appetizer with your favorite bread. The combination of the rich tuna, creamy eggs, and tangy mustard creates a flavor profile that's both comforting and exciting.

For extra presentation, garnish with additional chopped dill or a sprinkle of smoked paprika. The salad keeps well in the refrigerator for up to 3 days, making it a great make-ahead dish for busy weeks. Enjoy your perfectly balanced tuna salad with egg and mustard!

Essential equipment for this recipe

Mixing Essentials

Start with a large mixing bowl—I recommend a stainless steel or glass bowl (like Pyrex) because they’re non-reactive and easy to clean. A wooden spoon or silicone spatula works best for folding ingredients without breaking up the tuna too much.

Avoid metal spoons if you’re worried about oxidizing the tuna’s flavor. 🥣

Hard-Boiled Egg Tools

For perfect hard-boiled eggs, invest in a small saucepan with a lid and a slotted spoon for easy draining. I use a manual egg separator (like the OXO Good Grips) to chop eggs finely without making a mess.

A sharp chef’s knife and cutting board are non-negotiable—dull knives crush eggs instead of chopping them neatly. 🥚

Knife Skills Matter

Finely dice the celery and red onion using a mandoline slicer (like the Progressive) for uniform pieces, or freehand with a sharp chef’s knife. A microplane works great for zesting lemon if you want extra brightness.

For extra crunch, pulse pickles in a food processor (like the Ninja Mini) for 2 seconds—just enough to break them down. 🧅

Storage Containers

Transfer the finished salad to an airtight container (I love Glasslock or Rubbermaid) to keep flavors fresh. For meal prep, portion into small glass jars (like Mason jars) so you can grab just what you need.

If freezing, use freezer-safe bags with quart-sized capacity—leave 1 inch headspace to prevent expansion cracks. ❄️

Optional Extras

For garnishing, keep a small bowl of fresh dill and a shaker of smoked paprika nearby. A mini whisk (like the OXO Good Grips) helps emulsify any separated mayo if you reheat the salad. If you’re adding pickles, a fine-mesh strainer ensures no seeds slip through. 🌿

Time-Saving Gadgets

Save time with a mandoline for onions/celery or a food processor for pickles. A digital kitchen scale (like Escali Primo) ensures precise measurements for mustard and mayo ratios.

For chilling, I use a wide-mouth thermos (like Yeti) to keep the salad cold for up to 4 hours—perfect for picnics. ⏱️

Frequently asked questions