Prepare a 9x13 baking dish by lining with foil and spraying with non stick cooking spray.

In a large mixing bowl, combine chocolate chips, butter, pecans, marshmallow creme and vanilla extract.

In a large cooking pot, combine sugar and evaporated milk.

Bring to a boil over high heat.

Once mixture starts to boil, stirring constantly, let it boil for exactly 9 minutes.

Remove from heat and stir in chocolate chip mixture.

Stir well until melted.

Pour mixture into 9x13 pan and let cool.

Refrigerate until set.

Use foil to remove from pan and cut into cubes.