Melt the coconut oil and stir in the cacao until there are no dry bits.
Pour in the maple syrup and stir until well incorporated. It should be completely smooth.
Pour the mixture into lined muffin tins (about 1 centimeter in thickness) or a silicone mold.
Freeze for a couple minutes then sprinkle with flaky sea salt. Then back into the freezer for a few minutes more until firm -- about 5 minutes total between the first freezer sesh and second.
Pop out of the liner or mold and enjoy!