Hershey Chocolate Bar Cookies
["1 c. butter or margarine", "1 c. brown sugar", "1 egg", "2 c. flour", "1 tsp. vanilla", "5 Hershey chocolate bars", "chopped nuts"]
["Preheat oven to 350\u00b0.", "Mix butter, brown sugar, egg, flour and vanilla.", "Press on ungreased cookie sheet.", "Bake at 350\u00b0 for 20 minutes (or until lightly browned). After removing from oven, and while still warm, top with chocolate bars to melt.", "Sprinkle with chopped nuts.", "Cut into squares when cool."]
["butter", "brown sugar", "egg", "flour", "vanilla", "chocolate bars", "nuts"]