In a large saucepan, combine sugar, butter, evaporated milk, marshmallow cream, and salt. Stir until mixed thoroughly over medium hit.

Bring ingredients to a low boil stirring constantly.

Allow marshmallow mixture to boil for 7 - 8 minutes or until the mixture reaches between 234 and 240 degrees F.

When mixture reaches the correct temperature take off of heat. Stir in vanilla and the chocolate and butterscotch chips until melted and fully combined.

Pour the fudge mixture into a parchment-lined or greased 8" x 8" square pan.

Take remaining butterscotch chips to sprinkle on top of the fudge.

Allow to fully cool at room temperature before slicing and serving.