Roasted-Beet Salad With Horseradish Crème Fraîche and Pistachios Recipe

For the Beets: Preheat oven to 375°F (190°C). Fold a 12- by 24-inch sheet of aluminum foil in half to form a square. Crimp together foil on 2 sides of square to form a pouch with an opening on one side. In a medium bowl, toss together beets, 1 tablespoon (15ml) olive oil, and salt and pepper to taste until beets are coated. Add to pouch and crimp remaining side to seal. (If using beets of multiple colors, roast in separate pouches.) Transfer to a rimmed baking sheet and place in oven. Roast until beets are completely tender and a toothpick or cake tester inserted into a beet through foil meets little to no resistance, about 1 1/2 hours. Remove from oven and allow to cool. When beets are cool enough to handle, peel by gently rubbing skin under cold running water. Cut beets into 1 1/2–inch chunks. Beets can be cooked and stored in the refrigerator for up to 5 days. For the Horseradish Crème Fraîche: In a small bowl, stir together crème fraîche and horseradish. Season to taste with salt and pepper. Refrigerate until ready to use. For the Dressing: In a small bowl, combine lemon juice, tarragon, chives, shallot, and honey. Slowly drizzle in olive oil while stirring vigorously with a fork. Season dressing to taste with salt and pepper. To Serve: In a large bowl, toss beets with dressing. Spoon half of crème fraîche mixture on the bottom of a serving plate. Place beets on top and drizzle with remaining crème fraîche mixture. Sprinkle with pistachios and serve.