How to Make It
Bring 1 1/2 cups water, barley, and 1/4 teaspoon salt to a boil in a saucepan. Reduce heat to medium; cover and cook until barley is tender and water is mostly absorbed, about 25 minutes. Stir in beans.
Process cilantro, pepitas, 1/4 cup olive oil, lemon juice, garlic, coriander, pepper, remaining 1 tablespoon water, and remaining 1/2 teaspoon salt in a food processor until smooth.
Boil broccoli rabe 2 minutes. Rinse with cold water; drain. Pat dry. Heat remaining 1 tablespoon oil in a skillet over medium-high. Add broccoli rabe and lemon zest; cook, stirring often, 3 minutes.
Place 2/3 cup barley mixture in each of 4 bowls. Top evenly with broccoli rabe, cilantro pesto, and cheese.