Low FODMAP

    Low FODMAP Mediterranean Tuna Salad — 10-Minute IBS-Friendly Lunch

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    the LowFODMAPRecipe.com Editorial Team
    •June 22, 2026

    Total Time

    10 min

    Servings

    2

    Prep

    10 min

    0
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    Low FODMAP Mediterranean Tuna Salad — 10-Minute IBS-Friendly Lunch — low FODMAP lunch ready to serve
    Written & reviewed by the LowFODMAPRecipe.com editorial team• Educational content, not medical advice
    Published June 22, 2026Updated October 22, 2026

    A no-cook Mediterranean tuna salad with spinach, cucumber, tomatoes, olives, feta and lemon dressing. Ready in about 10 minutes and designed for two servings. Choose plain tuna and check flavourings in olives and dressing; ingredient amounts and individual tolerance still matter. Educational information, not medical advice.

    Ingredients

    • 2 cans (5 oz each) tuna in water or olive oil, drained
    • 4 cups baby spinach
    • 1 medium cucumber, diced
    • 1 cup cherry tomatoes, halved
    • 1/4 cup pitted kalamata olives, halved
    • 1/4 cup crumbled feta cheese
    • 2 tbsp chopped fresh chives (green tops only)
    • 2 tbsp fresh lemon juice

    Whisking the Dressing

    In a small bowl, whisk together the fresh lemon juice, extra-virgin olive oil, dried oregano, a pinch of salt, and a generous grind of black pepper. Set aside to let the flavors meld while you prep the rest.

    Prepping the Salad

    In a large mixing bowl, layer the baby spinach as the base. Top with diced cucumber, halved cherry tomatoes, kalamata olives, drained tuna, crumbled feta, and chopped chives.

    Tossing & Serving

    Drizzle the dressing over the salad and toss gently with two large spoons until everything is evenly coated. Taste and adjust with extra salt, pepper, or a squeeze of lemon if needed.

    Divide between 2 bowls and serve immediately with a lemon wedge on the side.

    Meal Prep Tips

    For meal prep, pack the dressing in a separate small container and layer the salad in a mason jar — dressing at the bottom, tuna, then sturdy veggies, finishing with spinach on top. Shake and pour into a bowl when ready to eat. Keep refrigerated at 40°F (4°C) or below and use within 3 days for quality. Refrigerate within two hours, or one hour above 90°F (32°C); keep the dressing separate and discard salad left out beyond that window.

    Variations

    • Greek style: Add a sprinkle of dried mint and a few extra olives
    • Italian style: Swap feta for low-FODMAP hard cheese like parmesan
    • Protein boost: Add a sliced hard-boiled egg

    Use the Low FODMAP Food Checker to review unfamiliar ingredients (avoid the pickled olives that contain garlic). The Portion Calculator helps compare serving sizes; it does not certify this recipe.

    Hungry for more no-cook ideas? Try our Low FODMAP Turkey Lettuce Wraps, or explore the full low FODMAP lunch collection and IBS-friendly recipes.

    FODMAP Notes

    Ingredient and portion checks

    This recipe makes two servings; divide the complete salad equally rather than treating the full bowl as one portion. Plain tuna is different from tuna packed in a flavoured broth: inspect labels for garlic, onion and other added ingredients. Check olive marinades too. Feta contains less lactose than many soft dairy products, but the brand, amount and your tolerance matter; omit it or select an appropriate lactose-free alternative if needed.

    The listed cups and counts are recipe measures, not verified current Monash thresholds. Cucumber varieties, tomato sizes and additional toppings can change the meal. Review current ingredient serving guidance before using this during a prescribed elimination phase. This salad has not been laboratory tested or certified, and no recipe can guarantee freedom from symptoms.

    Packing a cold lunch

    Keep the dressing separate from the greens and carry the salad in an insulated bag with an ice pack. Refrigerate promptly and eat cold; generic reheating advice does not apply to this leafy salad. Avoid leaving it unrefrigerated for more than two hours, or one hour in heat above 90°F (32°C).

    Sources and next steps

    Read Monash's FODMAP diet guidance for portion-aware dietary planning, and FoodSafety.gov's leftover guidance for safe storage. For a cooked fish meal, try fish tacos with lime yogurt sauce.

    Educational information only, not medical advice. Individual tolerance varies; work with a qualified health professional for personalised dietary guidance.

    Storage Tips

    Store in an airtight container in the refrigerator for up to 3-4 days. This recipe freezes well for up to 3 months.

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