My grandma has made this year after year and I was lucky enough to get this recipe from her. It is quite rich. I like to add all walnuts to it but pecans would be great too. Someone once mentioned adding cranberries which I think would be good too. Hope you like it. It is a great do ahead recipe.
Place the chocolate, butter and marshmallow cream in a large bowl. In a heavy 4 quart saucepan bring to a boil the milk and sugar, stirring constantly.
When mixture reaches full rolling boil start timing and cook for 8 minutes, stirring frquently. Pour over the chocolate mixture and stire until well blended. Beat in the vanilla then stir in the nuts. Pour evenly into a greased 15"x10"x1" jelly roll pan. Spread evenly. Cool for about 10 minutes then refrigerate to firm at least a couple hours to overnight. Cut into 1" squares when cooled. Remember it is quite rich so not too big. Yummy!