Three-Onion Farro Soup

Deselect All

4 tablespoons unsalted butter

2 medium leeks (white and tender green parts), sliced into half-moons, washed

2 large onions, sliced into half-moons

1 bunch scallions, sliced, white and green parts separated

Kosher salt and freshly ground black pepper

1 cup pearled or quick-cooking farro

1/2 cup white wine

4 cups chicken broth

2 cups beef broth

1 tablespoon Worcestershire sauce

2 fresh or dried bay leaves

1 cup grated Gruyere (about 4 ounces)