Ingredients
2 pounds red beets, scrubbed, peeled, and cut into a medium dice
1 pound russet potatoes, peeled and cut into a medium dice
2 shallots, coarsely chopped
3 to 5 sprigs thyme
2 tablespoons extra-virgin olive oil
Kosher salt and freshly ground pepper
5 cups low-sodium chicken broth or water
1 tablespoon red-wine vinegar
Sour cream, thinly sliced scallion greens, and chopped fresh flat-leaf parsley, for serving
Preparation
Preheat oven to 400 degrees. In a roasting pan or on a rimmed baking sheet, toss together beets, potatoes, shallots, thyme, and olive oil; season with salt and pepper. Arrange in a single layer and roast until beets and potatoes are tender, about 45 minutes.
Discard thyme. Add vegetables to a medium pot along with broth. Bring to a simmer over medium-high and cook to heat through. With a potato masher or the back of a wooden spoon, mash some vegetables until soup is thick and chunky. Stir in vinegar and season with salt and pepper. Divide among bowls; top with sour cream, scallion greens, and parsley; serve.
