Farro Risotto with Butternut Squash and Scallions

Ingredients

• 1 cup pearled farro
• 3 tablespoons butter
• 3 garlic cloves, minced
• 1¼ cups chopped scallions, divided
• 2 cups diced (½-inch) peeled butternut squash
• 1 teaspoon kosher salt
• 1 teaspoon freshly ground black pepper
• ½ teaspoon dried thyme
• 1½ cups water
• ½ to ¾ cup shredded Parmesan cheese