Low-FODMAP Cajun Tuna Salad / Tuna Melt Recipe; Gluten-free

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A delicious and easy low-FODMAP Tuna Salad and Tuna Melt Recipe with a kick.  Enjoy this low-FODMAP Cajun Tuna Salad in a low-FODMAP Cajun Tuna Salad Sandwich, on a bed of lettuce and tomato, or with melted cheese as a low-FODMAP Cajun Tuna Melt.

This low-FODMAP recipe is super easy, but you can make it even simpler with my low-FODMAP Happy Spices Taco Seasoning.

Not only is it healthy, filling and packed with protein, but the low-FODMAP Cajun Tuna Salad is AMAZING.  Not kidding.  It’s creamy and zesty, but not overly spicy. It tastes like a fancy restaurant meal.  I couldn’t stop eating it!

Check out our blog for over 300 more low-FODMAP recipes.  You may also love these:

Be healthy and happy,

Rachel Pauls, MD

Low-FODMAP Cajun Tuna Salad and Tuna Melt Recipe; Gluten-free

Although this recipe has not been tested, a single serving should be low-FODMAP based on the ingredients

Serves 4

Prep time: 15 min


  • ½ cup mayonnaise (check no high-FODMAP ingredients, and gluten-free if necessary)
    • I like Hellman’s and Hellman’s Light
  • 2 tablespoons fresh squeezed lemon juice
  • 1 tablespoon paprika
  • 2 teaspoon low-FODMAP Happy Spices Taco Seasoning
    • can also substitue 2 tsp cumin, 2 tsp ancho chili powder, ¼ tsp salt and 1/8 tsp cayenne
  • ½ tsp black pepper
  • 3 five ounce cans drained white solid Albacore tuna (for best results, but you can substitute any canned tuna variety if necessary)
  • ½ cup chopped red sweet pepper
  • 2 tablespoons finely chopped celery
  • 1 tablespoon chopped chives (green tip only)
  • 1-2 tomatoes, sliced (optional, for serving)

For low-FODMAP Cajun Tuna Melts Version:

  • 2 cups (or 160 g) cheddar, Colby or mozzarella cheese, grated or sliced; divided into 4 (½ cup) servings


  • Place tuna in bowl and mince well with a fork until fine
  • Add all additional ingredients and stir to combine
  • Serve immediately with sliced tomatoes in low-FODMAP, gluten-free bread or bed of lettuce
  • Can also refrigerate until desired (will last about 3-4 days), or prepare low-FODMAP Cajun Tuna Melts as below

To make low-FODMAP Cajun Tuna Melts:

  • Prior to serving, lay 4 gluten-free, low-FODMAP buns or large slices of gluten-free, low-FODMAP bread on oven-safe tray
  • Distribute low-FODMAP Cajun Tuna Salad on buns/bread and top with tomato slices, then cheese
    • Can also layer the tomatoes following melting cheese, if you prefer your tomatoes crisp
    • Is delicious open-faced or in a layer low-FODMAP sandwich
  • Place in toaster or under broiler until cheese is melted
  • Serve immediately… absolutely delicious!

Comments Rating 5 (6 reviews)

17 Responses

  1. Easy and flavorful!

    I wasn’t sure if I liked tuna, but this recipe looked easy enough for a non-cook like me, and wow! It was so quick and easy to whip up. I modified a bit with the spicy-ness, as I do not like much spice (half of the cumin and chili powder and no cayenne at all), and it was perfect for my taste! Thank you for helping me branch out with tastes and create a lunch (open faced tomato-topped tuna sandwich) with enough leftovers to pack for additional lunches this week (cold tuna with rice crackers). I really liked it hot, and I hope I will like it cold on crackers as well.

    1. Abby,
      Thank you for your comments! We agree, this tuna recipe is easy but so flavorful. We love hearing feedback like this, it makes our day:)

  2. Delicious!

    This recipe completely exceeded my expectations! After I mixed everything together for the tuna salad and tasted it, I just thought, “wow, this is perfect! I don’t need to change anything.” Which, usually I alter recipes at least a little. It was flavorful, not too cumin-y, and had mild heat (I used the individual spices listed). The celery and sweet pepper were nice too to give it some texture. So easy and fast, with minimal dishes. I will definitely make this many more times!

  3. Perfect

    Open faced with tomato and iceberg lettuce on French sourdough is how I enjoy it. Been making a big batch once a month for a while and it never disappoints! Thanks for sharing Rachel.

    1. Adam!
      We are so happy to hear this feedback!!
      Thank you so much for sharing, please stay in touch. Have a great day ?

  4. Best Sandwich Ever

    This Low-Fodmap Cajun Tuna Melt was like heaven on earth. We had to leave out some ingredients because we did not have all of them. Regardless, this sandwich was the best sandwich I have ever tasted!

    1. PHENOMENAL Imani!
      We are always so touched that our readers enjoy our recipes!! You made our day SHINE. Let us know if you try anything else!

      1. I DEFINITELY plan to. We been having difficulty finding recipes that fit the Low-Fodmap diet, this is just what we needed. Thank you so Rachel. ☺️

          1. Thank you for sharing, I will DEFINITELY check it out. So far, I have made the smoothie recipe with strawberries, blueberries, and banana (I left a comment). ☺️

  5. Family favorite!

    This recipe is so good and super easy to make! It’s now one of my staple dinners when I’m on a tight budget or just want something quick and delicious. I leave out the ancho chili powder because it’s a little too spicy for us, but have tried it with it and it’s good either way. I also make it more like a grilled cheese so the bread is toasty and the cheese is melted nicely. I use sourdough bread and it’s amazing.

    1. Jessica!
      Amazing to hear from you. Your comments made our day shine so much brighter!!
      Stay in touch and have a lovely New Year’s 🙂

  6. One of our favorites

    This is one of our favorite recipes, and our go-to for tuna salad sandwiches. We skip the red pepper and chives, per personal preference, but otherwise make as written. Thanks for the great recipes!

    1. Hi B2Labs!
      Thanks SO much for posting your kind comments and review. We are so happy to hear from you. Please stay in touch with us!!

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