After the candy reaches a temperature of 290–300F, take it off the heat and mix in the vanilla essence slowly.
The chopped pecans should be carefully topped with the mixture.
After a few minutes of sitting undisturbed, sprinkle the chocolate chips on top of the candies.
After 5 minutes, or when the chocolate has melted, cover the baking dish with foil and set aside.
Carefully remove the foil and evenly distribute the melted chocolate. The ideal tool for the job is an offset spatula.
After the candies have cooled to room temperature, transfer them to the fridge. Let it sit for at least two hours.
After removing the parchment paper from the baking dish, set the toffee on a sturdy surface, such as a cutting board.
Gently cut it into tiny pieces with a knife.
Keep in a cold, dry location in a container that seals tightly.