In 4-Cup Prep Bowl, whisk mix with water, tahini, and olive oil until smooth and creamy.
Cube sweet potatoes; you should have about 3 cups. Place in Round or Multipurpose Steamer. Cover; microwave on high, 6–8 min, or until tender.
Drain and rinse chickpeas. Spiral or thinly slice beet and cucumber. You should have about 1 1⁄2 cups each.
Divide sweet potatoes, chickpeas, beets, and cucumber between six bowls. Top each bowl with 1 cup fresh greens, 2 tbsp prepared dressing, and crumbled feta, if desired.