Add onion and 2 tablespoons broth to pot; cook and stir 5 minutes or until onion is translucent, scraping up browned bits from bottom of pot. Add ginger, garlic, cinnamon and allspice; cook and stir 30 seconds or until fragrant. Stir in tomatoes, apricots, remaining broth and saffron, if desired; mix well. Return chicken to pot, pressing into liquid.