Tuna Nicoise Sandwiches Recipe
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 separated 1/2 cup nicoise olives, pitted 4 hard-boiled eggs, peeled and thinly sliced...