Heloise’s Fudge

4 ½ cup white sugar

1 large can evaporated milk

18 oz chocolate chips

2 cups chopped nuts

1 – 10 oz pkg mini marshmallows

½ cup butter

1 tsp vanilla

Mix sugar and milk in a large, heavy saucepan and slowly bring to a boil.  Let mixture boil for 8 minutes.  Remove saucepan from heat and add chocolate chips and marshmallows and butter.  Mix only until chips and marshmallows are melted.  Add the vanilla and nuts.  Blend.  Spread mixture in a large ungreased pan.  Let cook and cut.