Line an 8x8-inch pyrex pan with parchment paper that comes up the sides.
In a large saucepan, combine the sugar, evaporated milk, butter and salt. Bring to a full boil, stir in the marshmallow creme and boil for 5 minutes, stirring constantly.
Remove from heat, stir in all of the chocolate chips until melted and the mixture is smooth. Stir in the nuts and vanilla. Pour into the prepared pan; chill in the fridge until firm.