mediterranean eggplant and barley salad

INGREDIENTS

• 1 1/2 lb eggplant, cut into 1/2-inch cubes
• 3/4 lb zucchini, cut into 1/2-inch cubes
• 10 tablespoons extra-virgin olive oil
• 1 teaspoon salt
• 1 teaspoon black pepper
• 1 cup chopped scallion (from 1 bunch)
• 1 1/2 teaspoons ground cumin
• 1/2 teaspoon ground coriander
• 1/4 teaspoon cayenne (note: I used 1/8 tsp. and it was plenty spicy; adjust to taste)
• 1 1/4 cups pearl barley (8 oz)
• 1 (14-oz) can reduced-sodium vegetable or chicken broth (1 3/4 cups)
• 3/4 cup water
• 2 tablespoons fresh lemon juice
• 1 garlic clove, minced
• 1/4 teaspoon sugar
• 1/2 lb cherry tomatoes, quartered
• 1/3 cup Kalamata or other brine-cured black olives, pitted and halved
• 1/2 cup thinly sliced red onion, rinsed and drained if desired
• 1 cup chopped fresh flat-leaf parsley
• 1/2 cup chopped fresh mint