Preheat oven to 350 degrees.  Cut each wonton in half diagonally.  Line a baking sheet with foil, spray the foil with cooking spray.  Place cut wontons on cooking baking sheet.  Spray tops of wontons lightly with cooking spray.  Bake at 350 degrees for 10 minutes or until golden.  Sprinkle with coarse salt, if desired. Remove from the oven and let cool.  They will crisp as they cool.