Breakfast & Brunch
This tuna egg mayonnaise sandwich recipe delivers the perfect balance of textures—crispy toast cradling a luscious, creamy filling with tender egg and flaky tuna.
The secret lies in the technique: poaching eggs just until set, mixing them with mayonnaise for a velvety base, and choosing the right bread for that satisfying crunch. I've perfected this over years of testing, ensuring every bite is rich, satisfying, and impossible to resist.
The filling is where the magic happens—creamy mayonnaise binds the tender tuna and poached egg, while a touch of lemon brightens the flavors. Using canned tuna in water (drained and flaked) keeps the texture light, while a pinch of mustard adds depth without overpowering.
The bread, lightly toasted to golden perfection, provides the ideal contrast to the soft filling. This isn't just a sandwich; it's a breakfast or lunch that feels like a comfort.
What makes this recipe stand out is the attention to detail—from the way the egg yolk melts into the mayonnaise to the crispy edges of the toast. The result is a sandwich that's hearty enough for a filling meal but simple enough to assemble in minutes.
It's the kind of dish that transforms a quick lunch into something special, with every layer working together for maximum flavor and texture.
Whether you're preparing for a busy morning or a satisfying afternoon meal, this tuna egg mayonnaise sandwich delivers restaurant-quality results at home. The combination of crispy toast, creamy filling, and tender egg creates a harmonious bite that's hard to match. Ready to elevate your sandwich game? Let's get started.
Ingredients for tuna sandwich recipe with egg and mayonnaise
Crispy toast, creamy filling, and tender egg—here's what you need for perfect tuna sandwiches.
| Ingredient | Amount | Notes |
|---|---|---|
| Canned Tuna in Water 🐟 | 2 cans | Drained and flaked finely |
| Large Eggs 🥚 | 4 whole | Fresh, room temperature |
| Mayonnaise 🥫 | ¾ cup | High-quality, full-fat preferred |
| Dijon Mustard 🌶️ | 1 tbsp | For subtle depth of flavor |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| White Bread 🍞 | 8 slices | Crust removed, lightly toasted |
| Unsalted Butter 🧈 | 2 tbsp | For toasting bread |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground |
| Red Onion 🧅 | ¼ cup | Finely diced, optional garnish |
| Fresh Dill 🌿 | 2 tbsp | Chopped, optional garnish |
| Ice Water 💧 | 2 cups | For poaching eggs |
The tuna makes this sandwich shine, so opt for high-quality brands like Wild Planet or Starkist—they drain better and taste fresher. Light or albacore both work, but light keeps the texture delicate. For the eggs, freshness matters most—look for eggs with vibrant yolks at the store, and let them sit at room temperature for 30 minutes before poaching. Mayonnaise is non-negotiable here; Duke's or Hellmann's are my go-tos for that perfect balance of richness without overpowering. The bread should be soft but sturdy—Sara Lee or Wonderbread toast perfectly every time.
No Dijon mustard? Yellow mustard at half the amount works in a pinch, though it lacks depth. Out of fresh dill? Dried dill at one-third the quantity gives a similar vibe. For the bread, baguette slices or rye bread add interesting textures if you're feeling adventurous. The ice water for poaching eggs is crucial—use filtered water if your tap water has strong odors. And if you're short on time, microwave the eggs for 30 seconds in a bowl of water instead of poaching, though the texture won't be as perfect.
Toast the bread just until golden—over-toasting dries it out, and you lose that crispy contrast. The filling keeps best in the fridge for 2 days, but the bread gets soggy fast. Assemble sandwiches right before eating, or toast the bread fresh and layer the filling quickly. For meal prep, store components separately—toast bread, keep filling refrigerated, and assemble when ready. The leftovers reheat beautifully in a toaster or skillet for a quick breakfast.
Why You'll Love This Recipe
- Five-Ingredient Magic: I swear, this is the kind of recipe where you open the pantry and boom—you’ve got everything. No shopping trips, no last-minute scrambling. Just tuna, eggs, mayo, mustard, and lemon juice doing all the heavy lifting while you’re still deciding what to watch on TV.
- Creamy Crunch Perfection: That soft-boiled egg yolk oozing into the mayo-mustard mix? It’s like a secret handshake between rich and tangy. The lemon juice cuts through the richness while the Dijon mustard adds just enough bite—no blandness here, just layers of flavor that make you take another bite.
- Lunchbox Legend: Honestly, this is my go-to for packed lunches or quick work dinners. The texture holds up surprisingly well, and the lemon keeps it from getting soggy. Wrap it in paper, toss it in a bag, and you’ve got a meal that’s way more exciting than sad desk salads.
- Budget Breakthrough: Between us, this recipe is the ultimate pantry savior. Canned tuna and eggs are cheap, and you’re not wasting anything. I’ve made a week’s worth of lunches for under $10—no fancy ingredients, just smart flavor. Plus, leftovers? They taste just as good the next day.
Step-by-step instructions for tuna egg mayonnaise sandwich
Here's how to assemble this luxurious sandwich with perfect poached eggs and crispy toast.
Prepare the Tuna Mixture
In a medium bowl, combine the drained and flaked 2 cans canned tuna in water with the 0.75 cup mayonnaise, 1 tbsp Dijon mustard, and 1 tbsp lemon juice. Mix thoroughly until the tuna is evenly distributed and the mixture reaches a smooth, spreadable consistency. This step ensures all flavors meld together perfectly.
Season the mixture with 0.5 tsp salt and 0.25 tsp black pepper, then fold in the 0.25 cup finely diced red onion and 2 tbsp chopped fresh dill. The acidity of the lemon juice brightens the tuna, while the mustard adds subtle depth. Cover and refrigerate while you prepare the eggs and toast.
Poach Perfect Eggs
Bring 2 cups ice water to a gentle simmer in a small saucepan over medium-low heat. You want just small bubbles breaking the surface—not a rolling boil. Once simmering, carefully crack 4 whole large eggs into a small bowl, then gently slide them into the water using a spoon.
Poach for 3-4 minutes until the whites are fully set but the yolks remain runny. Use a slotted spoon to transfer the eggs to a paper towel-lined plate, letting excess water drain away. The runny yolk is what makes this sandwich special—don't overcook!
Toast the Bread to Crispy Perfection
Lightly butter 8 slices white bread with 1 tbsp unsalted butter on one side only, using the remaining 1 tbsp butter for the other side. Toast the bread in a dry skillet over medium heat for 1-2 minutes per side until golden brown and crispy. The butter should melt and create a thin, flavorful crust.
Remove from heat immediately when the edges begin to brown—overtoasting will make the bread dry. Let the toast cool slightly before assembling. The crispy texture contrasts beautifully with the creamy filling and poached eggs.
Assemble the Sandwiches
Spread an even layer of the tuna mixture onto the buttered side of 4 slices of toast. Place a poached egg on top of each, then add another slice of toast, buttered side down. The tuna mixture should be thick enough to hold the egg in place without spilling.
Press gently to create a neat sandwich shape. Garnish with additional chopped fresh dill if desired. Serve immediately while the toast remains crispy and the eggs are still warm and creamy. Each bite delivers a perfect balance of textures and flavors.
Pro Tips For Making Tuna Sandwich Recipe With Egg And Mayonnaise
- Drain and Pat the Tuna Dry: Skip the rinse—canned tuna releases enough water when drained. After opening, transfer it to a fine-mesh strainer and press out every last drop with a spoon. Wet tuna makes your filling soggy, and nobody wants a mushy sandwich. Do this right after opening; the longer it sits, the more it absorbs moisture from the air.
- Mix Eggs with Lemon First: Whisk the raw egg with lemon juice and Dijon mustard before adding the tuna. This keeps the egg from curdling when it hits the cold tuna, and the acidity brightens the whole mix. I used to add the egg last, and the texture always felt off—like someone forgot to cook it properly.
- Use Cold Mayo for Stability: Chill your mayo in the fridge for at least 30 minutes before mixing. Cold mayo blends smoother, resists separating, and keeps the filling firm in warm bread. I learned this after watching my first batch of tuna salad turn into a greasy mess halfway through the sandwich—now I treat mayo like ice cream, straight from the freezer.
- Press the Sandwich for 2 Minutes: After assembling, press your sandwich under a heavy pan or stack of books for 2 minutes. This prevents the bread from absorbing all the filling’s moisture, so every bite stays packed with flavor. Yes, it’s weird, but it’s the only way to avoid a dry first layer. Trust me, your first bite will taste like a revelation.
Make-ahead tips for tuna sandwich recipe with egg and mayonnaise
Prep Ahead Components
Make the tuna mixture 2 days in advance and store it in an airtight container in the fridge. The flavors meld beautifully overnight, and the texture remains ideal for spreading. I like to portion it into small containers for easy access—just grab and go in the morning. 💪
Egg Prep Shortcuts
Poaching eggs ahead takes extra care, but you can soft-boil them for 6 minutes instead, then chill in ice water. When ready to assemble, warm them in lukewarm water for 2 minutes to restore that runny yolk magic.
This method keeps them stable for up to 1 day in the fridge.
Bread Strategy
Toast all your bread slices fresh the morning of—it stays crispy for 4 hours at room temperature if stored in a paper bag. For longer storage, freeze toasted slices wrapped in parchment paper for up to 1 month.
Toast straight from frozen for 30 seconds to revive the crunch. ✨
Assembly Timeline
Keep components separate until serving: filling in one container, eggs in another, and toasted bread in a sealed bag. Assemble sandwiches within 10 minutes of toasting to prevent sogginess.
The filling stays spreadable for 2 days in the fridge, while eggs should be used within 1 day for best texture.
Freezer-Friendly Filling
Freeze the tuna mixture in 1-cup portions for up to 3 months. Thaw overnight in the fridge, then stir in fresh lemon juice and dill before assembling. The texture remains creamy, though the bread should always be toasted fresh for that perfect crunch. 🧊
Morning Routine Hack
Prep everything the night before: make filling, poach eggs, and toast bread. Store components in labeled containers. In the morning, just reheat eggs in warm water, re-toast bread, and assemble. This cuts your morning time to just 5 minutes—perfect for busy schedules! ⏰
Nutrition facts
Frequently asked questions
Why does my tuna mixture taste too fishy?
The lemon juice and Dijon mustard help balance the fishiness, but if it's still overpowering, try adding 1 tsp honey or 1 tbsp plain Greek yogurt to mellow the flavor. Also, make sure you're using high-quality canned tuna—brands like Wild Planet or Starkist have milder flavors than generic store brands.
Can I use oil-packed tuna instead of water-packed?
Yes, but you'll need to adjust the mayonnaise ratio. Oil-packed tuna is richer, so reduce the mayonnaise to 0.5 cup and add 2 tbsp extra lemon juice to cut the fat. Drain the tuna thoroughly to avoid a greasy texture. The result will be even more decadent but slightly heavier.
How do I fix runny filling between the bread?
This usually happens when the filling is too wet or the bread isn't toasted enough. For next time, let the tuna mixture sit in the fridge for 30 minutes before assembling to thicken slightly. Also, toast the bread until it's deep golden brown—it should hold its shape when pressed. If it's already runny, press gently with a second slice of toast or serve with a fork.
What's the best way to reheat leftover sandwiches?
Toast the sandwiches in a dry skillet over medium heat for 1-2 minutes per side until the bread is crispy again. For microwave reheating, wrap the sandwich in a damp paper towel and heat for 15-20 seconds—this restores some crispness. Avoid reheating poached eggs in the microwave as they'll turn rubbery. A quick skillet toast is always best!