Heath Bar Candy

1 c melted butter (real butter)
1 1/2 c. sugar
1 tbsp corn syrup
3 tbsp water
1 large Hershey chocolate bar.

       Cook butter, sugar, corn syrup and water over medium heat 9stir (very little) to 300 degrees; use candy thermometer. Pour on buttered cookie sheet when cool. Pour melted chocolate over the top Add chopped nut, if desired. When cool, break into bight size pieces.