Start by preheating your oven to 350°F (175°C). Grease an 8x8-inch baking dish or line it with parchment paper for easy removal.

In a medium-sized bowl, combine the graham cracker crumbs and melted butter. Mix well until all crumbs are coated. Press this mixture firmly into the bottom of the prepared pan to form an even crust.

In a separate bowl, stir together the sweetened condensed milk and crushed Butterfinger bars. Pour this mixture evenly over the crust, spreading it gently.

Sprinkle chocolate chips on top of the Butterfinger layer, followed by drizzling caramel sauce evenly over everything.

Place the dish in the preheated oven and bake for 25-30 minutes, or until the edges are golden brown and the center is set.

Let the bars cool completely in the pan before cutting them into squares.