• 12 oz can evaporated milk
• 1/4 lb butter or margarine
• 4 cups sugar
• 3/4 tsp salt
• 12 oz package semi-sweet chocolate chips
• 7-1/2 oz jar marshmallow fluff
• 1 tsp vanilla extract

Place the evaporated milk, butter (or margarine), sugar, and salt in a large saucepan.  Bring to a boil, stirring constantly.  Boil until contents reach 238°.  Remove from heat and stir in chocolate chips, marshmallow fluff, and vanilla.  Stir until blended.  Add chopped nuts if desired.  Pour into a greased 9×13 pan.  Let cool and cut into squares.