Tune into the Food Network tonight to watch Lehighton sugar artist Candy Repsher Knappenberger get her shot at a $50,000 grand prize.Knappenberger will compete on “Cake Wars: Christmas,” which premieres at 9 p.m.“Cake Wars: Christmas” is hosted by Jonathan Bennett.Seven teams, each consisting of a cake artist, sugar sculptor and master food carver, will attempt to outdo each other with their outrageous holiday displays to jingle all the way home with a sweet $50,000.