In an ovenproof non-stick skillet, brown duck breasts, fat side down, for about 15 minutes over low heat. Season with salt and pepper. Remove any excess fat from the skillet and set 15 ml (1 tablespoon) aside. Turn duck magrets over and bake for about 8 to10 minutes for medium doneness. Place breasts on a plate and cover with aluminum foil. Let rest for 5 minutes. Discard remaining fat.