Preheat your oven to 350°F (175°C).
Prepare a baking dish by lining it with parchment paper.
In a mixing bowl, cream together the softened butter and sugar until light and fluffy.
Gradually add the flour and salt to the butter mixture, mixing until combined.
Press the dough into the prepared baking dish evenly.
Bake the crust for 15-20 minutes or until lightly golden.
While the crust cools, prepare the caramel layer by heating the caramel sauce in a saucepan.
Once the crust is cooled, pour the caramel sauce over the top, spreading it evenly.
Sprinkle crushed Butterfinger candies over the caramel layer.
Melt the chocolate chips in a microwave or double boiler.
Drizzle the melted chocolate over the Butterfinger candy layer.
Refrigerate the bars for at least one hour before cutting into squares.
