Herbed Chicken and Squash

INGREDIENTS

• 3/4 pound cipollini or sweet onions, halved if large
• 1/2 teaspoon freshly ground black pepper, divided
• 2 teaspoons canola or olive oil, divided
• 1 clove garlic, chopped
• 1 pound peeled, seeded and cubed butternut squash
• 2 teaspoons Dijon mustard
• 2 tablespoons chopped fresh rosemary, divided, plus 4 sprigs for garnish
• 4 bone-in, skinless chicken breasts (about 2 1/2 pounds)
• Vegetable oil cooking spray
• 2 teaspoons chopped ginger
• 1 teaspoon salt, divided
• 2 tablespoons apricot preserves
• 3 teaspoons balsamic vinegar, divided