Step 1

Preheat oven to 450°F. Mix first 3 ingredients in small bowl. Slide fingertips under skin of hen halves to loosen. Spread 1/4 of herb mixture under skin of each hen half. Rub skin with butter; sprinkle with salt and pepper. Place hen halves in shallow roasting pan.

Step 2

Roast hen halves until golden and cooked through, adding broth after 10 minutes and basting twice throughout cooking time, about 30 minutes.

Step 3

Transfer hen halves to platter. Place roasting pan directly atop burner over medium heat. Add juice, Sherry, and remaining herb mixture; boil until reduced, scraping up browned bits, about 2 minutes. Season with salt and pepper. Spoon sauce over hen halves, garnish with orange slices, and serve.