3 small golden beets (10 ounces total), peeled and trimmed
2 small ripe avocados (6 ounces each)
1 cup chopped fresh herbs (such as tarragon, dill, parsley, chives and/or cilantro)
½ cup plus 2 tablespoons low-fat buttermilk
2 tablespoons water
1 small garlic clove
2 tablespoons plus 4 teaspoons fresh lemon juice, divided
¾ teaspoon salt, divided
8 cups chopped romaine lettuce
1 (15.5 ounce) can no-salt-added chickpeas, drained and rinsed
1 cup lightly packed microgreens (such as pea shoots)
1 cup fresh corn kernels (from 2 ears)
1 cup frozen edamame, thawed
1 small watermelon radish, halved and thinly sliced on a mandoline (about 1/4 cup)
2 tablespoons extra-virgin olive oil
Wrap beets together in 1 sheet of microwavable parchment paper. Microwave on High until tender, 10 to 12 minutes. Let cool for 5 minutes. Cut each beet into 8 wedges.
Meanwhile, cut 1 avocado into 12 wedges. Chop the remaining avocado.
Combine herbs, buttermilk, water, garlic, 2 tablespoons plus 2 teaspoons lemon juice and 1/4 teaspoon salt in a blender. Puree until smooth, about 10 seconds, stopping to scrape down sides as needed. Add the chopped avocado; process on medium speed until blended and smooth, about 30 seconds, stopping to scrape down sides as needed.
Arrange romaine on a large platter. Top with chickpeas, microgreens, corn, edamame, radish slices, beet wedges and avocado wedges. Drizzle with oil and the remaining 2 teaspoons lemon juice; sprinkle with the remaining 1/2 teaspoon salt. Spoon the buttermilk dressing over the salad.