Turn dough rectangle upside down directly onto grill rack; peel off foil, and return foil to cookie sheet, sprayed side up. Place rack of dough on gas grill over medium-low heat or on charcoal grill 4 to 6 inches from medium-low coals. Cook uncovered 2 to 4 minutes or until bottom is light golden brown. (Watch carefully to prevent burning.) With wide metal pancake turner, turn crust over. Cook 1 to 2 minutes longer or until bottom is set but not brown. Carefully remove from grill; place browned side up on foil. Close grill.