Niçoise-Style Tuna Salad Bowl with Potatoes and Eggs

Inspired by the flavours of salade Niçoise, this tuna salad bowl turns a familiar French-style composed salad into a practical lunch or light supper. Tender baby potatoes, crisp-tender green beans, ripe cherry tomatoes, flaky canned tuna and hard-boiled eggs are arranged rather than tossed, so each element keeps its texture and shape. Black olives bring a salty savoury note, while a Dijon, red wine vinegar and extra-virgin olive oil vinaigrette gives the bowl its sharp, glossy finish. It is best served slightly warm or at room temperature, making it useful for make-ahead meals as well as relaxed everyday serving.
Cuisine style Niçoise-inspired composed salad
Cooking style Meal prep friendly • Make-ahead friendly
Time commitment Under 1 hour

Why this recipe works

  • Bright, balanced dressing: Dijon mustard, red wine vinegar and extra virgin olive oil give the potatoes, tuna and eggs enough acidity without overpowering them.
  • Good texture contrast: Tender potatoes, crisp-tender beans, juicy tomatoes and flaky tuna make the bowl feel varied and substantial.
  • Flexible serving temperature: It works slightly warm or at room temperature, which makes it practical for lunch, meal prep or relaxed entertaining.

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Timing notes

  • Best serving window: Serve shortly after assembling while the potatoes are still slightly warm, or let everything come to room temperature before eating.
  • Cook components in parallel: Boil the eggs while the potatoes cook, then blanch the beans, to keep the overall timing efficient.

Ingredient notes

  • Use ripe tomatoes: Sweet, ripe cherry tomatoes help balance the salty olives, tuna and mustardy dressing.
  • Choose good tuna: Well-drained canned tuna in large flakes gives the salad a cleaner texture than finely broken tuna.
  • Adjust the vinaigrette: Taste the dressing before serving and add a little more vinegar or seasoning if the potatoes have softened the flavour.

Make-ahead tips

  • Keep the dressing separate: For the freshest texture, store the vinaigrette separately and spoon it over just before serving.
  • Prep the cooked elements: The potatoes, beans and eggs can be cooked ahead and chilled, then brought closer to room temperature before assembly.
  • Slice eggs last: Keep the eggs whole until serving so the cut surfaces stay moist and neat.

Authenticity notes

  • Niçoise-style, not strictly classic: Potatoes, green beans and canned tuna are common modern additions to Niçoise-style salads, though traditional versions can vary.
  • Olives and tuna are key markers: The combination of tuna, eggs, tomatoes and olives gives the bowl its recognisable Niçoise character.

Equipment you'll need

Ingredients
Instructions
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  1. Put the potatoes in a saucepan, cover with cold water and add half the fine sea salt. Bring to the boil, then simmer for 12 to 15 minutes until a knife slides in easily. Drain well in a colander and let the steam escape.
  2. Meanwhile, bring a second saucepan of water to the boil and gently lower in the eggs. Simmer for 9 minutes for hard-boiled eggs, then drain and cool under cold running water. Peel and cut into halves or quarters.
  3. Top and tail the green beans, then boil in salted water for 3 to 4 minutes until tender but still bright. Drain and cool briefly under cold water, then shake off excess water. Set aside.
  4. In a mixing bowl, whisk together the Dijon mustard, red wine vinegar, remaining fine sea salt and black pepper. Slowly whisk in the extra virgin olive oil until glossy and slightly thickened. Taste and adjust seasoning if needed.
  5. Halve the cherry tomatoes and drain the tuna well, breaking it into large flakes. In two bowls, layer the warm potatoes, green beans, tomatoes, black pitted olives, tuna and eggs. Spoon over the vinaigrette and serve slightly warm or at room temperature.

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Recipe notes

Tips

  • For the best texture, dress the potatoes while they are still warm so they absorb the vinaigrette.
  • If serving later, keep the eggs whole and slice just before serving to prevent them drying out.
  • If you are pregnant, elderly, or immunocompromised, use eggs stamped with the British Lion mark and cook until the yolks are firm.

Substitutions

  • Replace red wine vinegar with white wine vinegar for a slightly lighter, cleaner acidity.
  • Replace Dijon mustard with whole-grain mustard for a coarser texture and milder heat.
  • Replace canned tuna with canned salmon for a richer, softer flake.

Storage

  • Refrigerate up to 2 days
  • Store in an airtight container in the fridge, keeping the dressing separate if possible. For best results, bring to room temperature for 15 minutes before serving; if you prefer it warm, gently warm the potatoes and beans, then assemble with the remaining components.

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Niçoise-Style Tuna Salad Bowl with Potatoes and Eggs
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Recipe overview

  • Servings: 2 servings
  • Total time: 40min (25min active)
  • Difficulty: Medium
  • Cuisine: American
  • Allergens:
    Eggs Fish Mustard
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