Prepare the Base: In a large mixing bowl, combine the graham cracker crumbs, cocoa powder, toasted shredded coconut, brown sugar, and melted butter. Mix until everything is fully combined and resembles wet sand.
Form the Crust: Line an 8x8-inch baking dish with parchment paper, leaving some overhang for easy removal. Press the crumb mixture evenly into the bottom of the prepared dish to form a firm crust.
Create the Filling: In a separate bowl, mix the sweetened condensed milk, caramel sauce, and vanilla extract until smooth. Stir in a little more toasted shredded coconut, about ¼ cup, for an extra coconut flavor.
Layer the Filling: Pour the caramel coconut mixture over the graham cracker crust, spreading it evenly with a spatula.
Melt the Chocolate: In a microwave-safe bowl, melt the semi-sweet chocolate chips in 30-second intervals, stirring in between until smooth.
Top with Chocolate: Pour the melted chocolate over the caramel layer, spreading it evenly with a spatula. Optional: drizzle a bit of extra caramel over the chocolate for decoration.
Chill: Allow the bars to sit at room temperature for about 10 minutes, then place them in the refrigerator for at least 2 hours or until they are set.
Serve: Once set, lift the bars out of the dish using the parchment paper overhang. Cut into squares and sprinkle with a pinch of sea salt before serving.
Notes
For best results, allow the bars to chill thoroughly before cutting.