Fantasy Fudge

3 cups sugar
¾ cup margarine
2/3 cup (6 oz) evaporated milk
2 (6 oz) pkgs. semi-sweet chocolate pieces
1 jar Kraft Marshmallow Crème
1 cup chopped nuts or more
1 tsp. vanilla

Combine sugar, margarine, and milk.  Bring to a boil.  Stir five minutes over medium heat to soft-ball stage (2238).  Remove from heat; stir in chocolate pieces.  Add marshmallow crème, nuts and vanilla.  Beat until well blended.  Pour into a greased 13 x 9 inch pan.  Cool.  Cut in squares.