Tuna Nicoise Sandwich

Ingredients

• 1/2 white onion, thinly sliced
• 1/2 red onion, thinly sliced
• 1/4 cup plus 4 teaspoons extra-virgin olive oil
• 2 tablespoons red wine vinegar
• Coarse salt and freshly ground pepper
• 2 jars (7 ounces each) best-quality tuna packed in olive oil
• 1 tablespoon fresh lemon juice, plus lemon wedges, for serving
• 4 small ciabatta rolls, split horizontally
• 2 heads Bibb lettuce, leaves split horizonatally
• 1 1/2 cups nicoise olives, pitted
• 8 hard-boiled eggs, peeled and thinly sliced

Details

Cooking time 20mins

Preparation

Step 1

Put onions, 1/4 cup oil, vinegar, and 1/4 teaspoon salt in a medium bowl; season with pepper. Toss to combine. Let stand 10 minutes.

Add tuna and its oil to onion mixture. Add lemon juice and 1/4 teaspoon salt; season with pepper. Gently toss to combine.

Cover bottom halves of rolls with lettuce. Top with olives, eggs, and tuna mixture, dividing evenly. Drizzle each with 1 teaspoon olive oil. Cover with top halves of rolls. Serve with lemon wedges.

Note: Because tuna is the star ingredient in this sandwich, it's worth buying oil-packed tuna in a jar, which has a higher quality and finer flavor than the canned variety.