Now it’s time to put it all together. Once the shortbread and caramel layers have completely cooled, pour the caramel sauce over the shortbread base layer, spreading it out evenly, again filling about 1/3 of each mini cup. Set in the freezer until these two combined layers completely harden (about 1-2 hours).
Once frozen, remove from the freezer (be sure to put back into the freezer to finish hardening if you find it’s still soft), and pour the melted chocolate over top to fill each cup in the silicone mold – again, spreading out evenly. Sprinkle flakey sea salt as the final touch and set in the fridge for 5-10 minutes to harden.
After everything has chilled together, remove the hardened bite-sized cups from the silicone mold by carefully popping them out from the bottom (they should pop out easily). Option to wrap individually in mini foil or parchment paper candy wrappers, or serve on a plate. Enjoy!