Spicy Avocado Tuna Salad with Harissa Dressing – Healthy Protein-Packed Lunch Recipe
If you’re craving a bold, zesty salad that hits the perfect balance between creamy and fiery, look no further than this Avocado and Tuna Salad with Harissa-Mustard Dressing, inspired by flavors from the southern Mediterranean. Nicknamed the “Sud du Sud” salad, it features ripe avocado, juicy baby tomatoes, and flaky tuna, all tossed in a vibrant dressing made with harissa, mustard, lemon, and neutral oil.
For more fish dinners to add to your weeknight rotation, explore our easy fish recipes for weeknight dinners. For more salads to serve as a meal or side, explore our salad recipes. For more meal ideas for busy evenings, explore our 30-minute dinner ideas.
This salad is ideal for hot days, light lunches, or any time you need a quick, high-flavor dish with minimal effort. It’s healthy, packed with protein and good fats, and easy to make in under 20 minutes.
Why You’ll Love This “Sud du Sud” Salad
- Spicy & bright – The harissa-mustard dressing adds heat, acidity, and depth.
- Creamy & satisfying – Ripe avocado makes it rich and smooth.
- Protein-rich – Tuna adds lean protein for a filling, balanced meal.
- Quick to make – Perfect for meal prep or last-minute lunches.
- Fresh and herbaceous – Finished with parsley for a refreshing bite.
Ingredients
For the Spicy Harissa-Mustard Dressing (“Sauce Sud du Sud”)
- 1 egg (approx. 50 g)
- 15 g (1 tbsp) strong Dijon mustard
- 20 g (1 tbsp) harissa paste or sauce
- 20 ml (1 tbsp + 1 tsp) fresh lemon juice
- 60 ml (¼ cup) neutral oil (canola, sunflower, or grapeseed)
- 3 g (½ tsp) salt
For the Salad
- 150 g (1 cup) baby tomatoes, sliced (cherry or grape tomatoes)
- 160 g (about 1 large or 1½ medium ripe avocados), diced
- 60 g (¼ cup) canned tuna, drained and flaked
- 5 g (1 tbsp) chopped fresh parsley
Instructions
Step 1 – Make the “Sud du Sud” Dressing
- In a tall, narrow container, crack the egg.
- Add mustard, harissa, and lemon juice.
- Blend briefly with an immersion blender until smooth.
- While blending, slowly drizzle in the neutral oil to create a creamy emulsion.
- Add salt, blend again, and chill until ready to use.
💡 Pro Tip: Use a container that’s just slightly wider than your hand blender head to help the emulsion form properly. A wide container will make it harder for the sauce to thicken.
Step 2 – Assemble the Salad
- In a mixing bowl, combine the sliced baby tomatoes, diced avocado, and flaked tuna.
- Pour the harissa-mustard dressing on top.
Craving more quick and refreshing ideas? Try our Creamy Basil Avocado Salad or this Tuna Pasta Salad with Basil Vinaigrette. For a heartier twist, pair it with our Marry Me Chicken or Chicken with Roquefort Sauce.
- Gently fold everything together using a spatula. Avoid mashing the avocado or breaking up the tuna too much.
- Garnish with chopped parsley.
- Serve chilled for maximum refreshment and flavor.
Substitutions and Variations
- No harissa? Use sriracha or chili paste. Add a pinch of smoked paprika for extra flavor.
- Egg-free version: Use 2 tbsp mayonnaise or aquafaba in place of the egg for the dressing.
- No avocado? Try diced cucumber, chickpeas, or hearts of palm.
- Different protein: Swap tuna for grilled shrimp, smoked salmon, or chickpeas.
- Add crunch: Toss in chopped walnuts, sunflower seeds, or crispy pita strips.
- Make it a meal: Serve over cooked couscous, quinoa, or baby spinach.
Tips and Tricks
- Emulsify Your Dressing Correctly – Slowly add oil while blending for the perfect creamy texture.
- Tame the Heat – Harissa heat varies. Start with a small amount and taste before adding more.
- Use Ripe Avocados – Not too soft or firm. Dice just before mixing to prevent browning.
- Use Good Tuna – Tuna in water is light; tuna in oil is richer. Always drain well.
- Serve Cold – Chill the salad for 15–30 minutes for the best taste and texture.
Frequently Asked Questions
Can I make this salad ahead?
Make the dressing ahead of time (up to 2 days). Assemble the salad fresh for the best avocado texture.
Can I use olive oil instead?
Neutral oil is ideal so the harissa flavor isn’t overpowered. If needed, use grapeseed or light-tasting avocado oil.
How spicy is this salad?
It depends on your harissa! The creamy elements (avocado, egg) help balance the heat.
Where can I buy harissa?
Look in the international aisle or order online. Paste-style harissa gives the best texture for dressing.
How long will leftovers keep?
Eat within 24 hours. The avocado may brown, but the flavor remains good.
Serving Ideas
- Serve in pita bread for a spicy sandwich.
- Add over greens or grains like couscous.
- Use as a filling in lettuce cups or wraps.
- Pair with sparkling lemon water or mint tea.
Final Thoughts
This Spicy Avocado and Tuna Salad with Harissa-Mustard Dressing brings together bold Mediterranean heat with creamy, nourishing ingredients. It’s quick, refreshing, and flexible—perfect for your weekly lunch rotation or a light dinner that still satisfies.
With baby tomatoes, ripe avocado, and a unique homemade dressing, the “Sud du Sud” salad makes every bite exciting.
More Quick and Flavorful Recipes
- Tuna Pasta Salad with Basil Vinaigrette – fresh, creamy, and great for meal prep.
- Creamy Basil Avocado Salad – smooth and full of flavor.
- Avocado and Hard-Boiled Egg Salad – protein-packed and satisfying.
- Chicken with Roquefort Sauce – rich and flavorful.
- Marry Me Chicken – creamy, garlicky, and unforgettable.
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For more ideas, browse our recipes with fresh and canned tuna.
Spicy Avocado Tuna Salad with Harissa Dressing
Ingredients
For the Dressing:
- 1 egg
- 15 g Dijon mustard
- 20 g harissa paste
- 20 ml lemon juice
- 60 ml neutral oil canola, sunflower, or grapeseed
- 3 g salt
For the Salad:
- 150 g sliced baby tomatoes
- 160 g diced avocado 1 large or 1½ medium
- 60 g flaked canned tuna
- 5 g chopped parsley
Instructions
Prepare the dressing:
- In a tall, narrow container, blend the egg, mustard, harissa, and lemon juice. Slowly stream in the neutral oil while blending to emulsify. Add salt and chill.
Assemble the salad:
- In a bowl, mix sliced baby tomatoes, avocado, and tuna. Drizzle with dressing and fold gently. Pour as much sauce as needed to your liking; some people prefer very creamy salads, while others do not.
Finish and serve:
- Top with parsley and serve cold. Optionally, add grains, greens, or bread to make it more complete.
Video
Notes
Tips and Tricks
- Emulsify Your Dressing Correctly – Slowly add oil while blending for the perfect creamy texture.
- Tame the Heat – Harissa heat varies. Start with a small amount and taste before adding more.
- Use Ripe Avocados – Not too soft or firm. Dice just before mixing to prevent browning.
- Use Good Tuna – Tuna in water is light; tuna in oil is richer. Always drain well.
- Serve Cold – Chill the salad for 15–30 minutes for the best taste and texture.
