Mediterranean Tuna Pasta Salad with Lemon-Oregano Vinaigrette

Why You’ll Love This Recipe

• Bright, zesty lemon–oregano vinaigrette keeps it light yet full of flavor.
• Pantry-friendly tuna meets crisp veggies for great texture in every bite.
• Ready in under 30 minutes and ideal for make-ahead lunches or picnics.
• No mayo—perfect for warm-weather gatherings.

Grocery List

• Produce: Lemon, garlic, cherry tomatoes, English cucumber, flat-leaf parsley, optional red onion
• Dairy: None (optional: feta for serving)
• Pantry: Short pasta, canned tuna in olive oil, Kalamata olives, capers, extra-virgin olive oil, Dijon mustard, dried oregano, kosher salt, black pepper, red pepper flakes, honey

Full Ingredients

For the Pasta Salad

• 8 ounces (225 g) short pasta (rotini, fusilli, or farfalle)
• 2 cans (5 oz/142 g each) solid tuna in olive oil, drained (about 7 oz/200 g drained weight)
• 1 1/2 cups (225 g) cherry tomatoes, halved
• 1 1/2 cups (200 g) English cucumber, diced into 1/2-inch pieces
• 1/2 cup (75 g) pitted Kalamata olives, halved
• 2 tablespoons capers, rinsed and drained
• 1/3 cup (15 g) chopped fresh flat-leaf parsley
• Optional: 1/4 small red onion, very thinly sliced (about 1/3 cup/40 g)
• Optional to serve: lemon wedges and extra parsley

For the Lemon–Oregano Vinaigrette

• 6 tablespoons (90 ml) extra-virgin olive oil
• 3 tablespoons (45 ml) fresh lemon juice (from about 1 large lemon)
• 1 teaspoon finely grated lemon zest
• 1 teaspoon Dijon mustard
• 1 garlic clove, finely minced (or 1/2 teaspoon garlic paste)
• 1 teaspoon dried oregano (or 1 tablespoon finely chopped fresh oregano)
• 1/2 teaspoon honey (optional, to balance acidity)
• 3/4 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper
• Pinch red pepper flakes (optional)

Step-by-Step Instructions

Step 1: Boil the pasta in well-salted water

Bring 4 quarts (3.8 L) of water to a rolling boil and add 1 tablespoon kosher salt. Stir in the pasta and cook 9 to 10 minutes, or until al dente (check your package for shape-specific timing). Drain and rinse under cold water until cool to the touch. Shake off excess water very well.

Step 2: Make the lemon–oregano vinaigrette

In a medium bowl, whisk together lemon juice, lemon zest, Dijon, garlic, oregano, honey (if using), salt, pepper, and red pepper flakes. While whisking, slowly stream in the olive oil until the dressing looks slightly thickened and emulsified. Taste and adjust salt, pepper, and lemon to your liking.

Step 3: Prep the mix-ins

Halve the cherry tomatoes and olives. Dice the cucumber. Rinse and drain the capers. If using red onion, slice it very thinly and soak in cold water for 10 minutes to mellow its bite, then drain well. Drain the tuna and use a fork to break it into large, tender flakes.

Step 4: Dress the pasta

Transfer the cooled, well-drained pasta to a large mixing bowl. Add half of the vinaigrette and toss for 30 to 45 seconds until the pasta is evenly coated and glossy. This first pass helps the dressing cling to the pasta.

Step 5: Fold in tuna and vegetables

Add the tomatoes, cucumber, olives, capers, onion (if using), and parsley. Gently fold in the flaked tuna, keeping some larger pieces intact. Pour over the remaining vinaigrette and toss gently to coat. Taste and adjust with a pinch more salt, extra pepper, or a squeeze of lemon.

Step 6: Rest, garnish, and serve

Let the salad rest for 10 minutes at room temperature so the flavors meld, or cover and chill 30 minutes to 2 hours. Toss again before serving. Garnish with extra parsley and a sprinkle of lemon zest, and offer lemon wedges at the table. Serve cool or at a mild room temperature.

Pro Tips

• Salt your pasta water generously (about 1 tablespoon kosher salt per 4 quarts) so the noodles are flavorful from the inside out.
• Rinsing cooked pasta for a cold salad stops the cooking and prevents gumminess, helping the vinaigrette coat evenly.
• Emulsify the dressing thoroughly; a well-emulsified vinaigrette clings better and keeps the salad glossy.
• Use tuna packed in olive oil for superior texture and flavor. Drain well, then flake gently so you get tender bites throughout.
• Let it rest: even 10 minutes softens the bite of the onions, opens up the oregano, and marries the lemon with the briny elements.

Variations

• Feta finish: Top with 1/2 cup (75 g) crumbled feta for creamy, tangy contrast.
• Herb swap: Replace parsley with fresh dill or basil for a different Mediterranean vibe.
• Grain switch: Use short-cut whole-wheat or gluten-free pasta; cook just to al dente for best texture.

Storage & Make-Ahead

Refrigerate in an airtight container for up to 3 days. For the best texture, reserve 2 tablespoons of vinaigrette to stir in just before serving, or add a splash of olive oil and lemon juice to revive. If making more than 12 hours ahead, keep the tomatoes and cucumber separate and fold them in shortly before serving to preserve freshness and crunch.

Nutrition (per serving)

Approx. 530 calories; 23 g fat (3 g saturated); 58 g carbohydrates; 4 g fiber; 24 g protein; 820 mg sodium. Nutrition will vary based on tuna brand, pasta type, and added salt.