Step 1

Line a 9"x13" with foil and spray with non stick cooking spray. Set aside.

Step 2

In a double boiler, bring sugar, butter and evaporated milk to a rolling boil over medium heat. Boil for 5 minutes, stirring constantly (temp should read 234 F on a candy thermometer).

Step 3

Remove from heat and stir in chocolate chips and marshmallow creme. Stir until completely melted.

Step 4

Add vanilla and mix well. If you are using nuts, add them now, too.

Step 5

Pour into prepared pan and let cool completely.

Step 6

Lift foil out of pan and cut into small squares.