Ingredients
1 pound golden beets (about 4 medium)
1 pound ruby red beets (about 4 medium)
1 pound ripe red or yellow tomatoes (about 3 medium)
3 or 4 scallions, white and green parts, sliced crosswise
3 tablespoons roughly chopped dill
Handful of arugula or watercress, for garnish (optional)
3 tablespoons red wine vinegar
Kosher salt and black pepper
1 tablespoon Dijon mustard
1/4 cup extra-virgin olive oil
Directions
1
Cook the beets: Heat oven to 400 degrees. Scrub beets, and place in 2 baking dishes just large enough to hold them — golden beets in one, red in the other to keep colors from bleeding. Add an inch or so of water. Cover and bake until tender when probed with a skewer, about 1 hour. Set aside to cool. (Alternatively, boil or steam beets instead. Beets may be cooked several hours or up to 2 days in advance.)
2
Prepare the vinaigrette: Put vinegar and pinch of salt in a small bowl. Add mustard and stir with a fork to dissolve. Beat in olive oil to make the dressing thicken slightly. Add pepper to taste, plus a bit more salt, if necessary.
3
When the beets are cool enough to handle, rub off the skins. Cut golden beets in half lengthwise, then into 6 to 8 wedges, depending on the beet's size. Repeat with red beets. Place in separate bowls, and season with salt. Slice tomatoes 1/2-inch thick, place in a separate bowl and season with salt.
4
Whisk vinaigrette, and pour over beets and tomatoes, dividing it evenly among the bowls. Toss gently and marinate for 10 minutes.
5
To serve, spoon the golden beets, red beets and tomatoes into distinct piles onto a large platter or serve in separate bowls. Top with scallions, and sprinkle with dill. Garnish with arugula or watercress, if using.