Food & Cooking Recipes Ingredients Seafood Recipes Salade Nicoise Sandwiches 1 Review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on May 16, 2017 Print Rate It Share Share Tweet Pin Email Photo: Yunhee Kim Servings: 6 In this Riviera-inspired sandwich stuffer, a simple vinaigrette marries potatoes, green beans, Nicoise olives, tomatoes, and tuna. When only a baguette will do for a sandwich, scoop out the interior; you'll cut back on refined carbohydrates and calories. Ingredients 6 ounces red potatoes, scrubbed and cut into ½-inch chunks 3 ounces thin green beans, trimmed 1 large egg 2 tablespoons Dijon mustard 2 tablespoons red wine vinegar ⅓ cup extra-virgin olive oil ½ ounce Nicoise olives (about 12 olives), pitted and coarsely chopped 1 medium shallot, cut into ¼-inch dice (about ¼ cup) 1 can (6 ounces) best-quality water-packed solid white tuna, drained 1 tablespoon finely chopped fresh flat-leaf parsley ¼ teaspoon coarse salt Freshly ground pepper 6 pieces baguette (6 inches long and 2 ounces each), split lengthwise 3 small tomatoes, thinly sliced Directions Cover potatoes with 2 inches of cold water in a medium saucepan. Bring to a boil. Reduce heat to medium-low; simmer until potatoes are tender, about 5 minutes. Drain potatoes, and let cool completely; set aside. Prepare an ice-water bath; set aside. Fill saucepan with cold water, and bring to a boil. Add green beans; cook until bright green, about 1 minute. Using a slotted spoon, transfer green beans to ice-water bath to stop the cooking; let cool completely. Cut green beans into 1/2-inch pieces; set aside. Refill ice-water bath; set aside. Fill a small saucepan with cold water; add egg. Bring to a boil. Remove from heat; cover, and let stand 11 to 12 minutes. Transfer egg to ice-water bath; let stand 2 minutes. Peel egg, and cut in half; discard yolk. Cut egg white into 1/2-inch pieces, and set aside. Whisk together mustard and vinegar in a small bowl. Whisk in oil in a slow, steady stream; set vinaigrette aside. Put potatoes, green beans, egg, olives, shallot, and tuna into a large bowl. Sprinkle with parsley and salt; season with pepper. Drizzle vinaigrette over tuna mixture; gently stir to combine. Using your hands, hollow out 1 half of each baguette piece, leaving a thin layer of bread. Arrange tomato slices over remaining half. Spoon 1/2 cup tuna salad onto hollowed-out half, and top with tomato-lined half. Rate it Print