In a medium-sized bowl, combine all the dry ingredients: cocoa powder, sweetener, almond flour, and the main portion of desiccated coconut. Mix them thoroughly until well combined.
Now, pour in the rum and the melted coconut oil. Mix everything together until a moist, workable dough forms. If the mixture feels too wet, add a little more desiccated coconut. If it's too dry, a tiny bit more melted coconut oil or water will help.
Using your hands, roll the mixture into 8 small balls, each weighing about 12 grams.
Gently roll each ball in the reserved 1 tablespoon of desiccated coconut to coat them. Place these delightful treats onto a tray or plate.
Refrigerate for at least 30 minutes to allow them to firm up.
Serve these delicious rum balls chilled directly from the fridge and enjoy your healthy holiday treat!