Line 9 inch square pan with foil. Butter foil or spray with Pam, and put aside.
Combine sugar, syrup, milk, butter and put in a heavy saucepan, which has been buttered all the way to the top.
Cook over medium heat, stirring constantly, until it reaches a full boil. Boil, stirring constantly, for 5 minutes, (no longer). Remove from heat; add chocolate chips, (which have been warmed in the microwave), and vanilla.
Stir in marshmallow creme and stir until smooth, and well blended. Pour into prepared pan, and cool for several hours. Cut into squares.
Submitted by: Robert