Arugula, Potato, and Green-Bean Salad with Creamy Walnut Dressing Recipe

Preheat oven to 375 degrees F. Place walnuts on a rimmed baking sheet. Toast in oven until fragrant, which will be about 8 minutes. Let cool slightly. Finely chop, and set aside.

Whisk together vinegar, yogurt, mustard, salt, and the toasted nuts in a small bowl; season with pepper. Add oil in a slow, steady stream, whisking until emulsified. Set dressing aside.

Bring a medium saucepan of water to a boil. Add potatoes, and cook until tender. Using a slotted spoon, transfer potatoes to a colander to drain. Set aside.

Prepare an ice-water bath; set aside. Return pan of water to a boil. Add green beans, and cook until tender and bright green. Using a slotted spoon, transfer to ice-water bath to stop the cooking.

Transfer to a cutting board, and cut into 2-inch pieces. Arrange arugula, potatoes, and green beans on a platter. Season with remaining salt and pepper. Drizzle with dressing; toss to coat.