Start by gathering all your ingredients. Make sure your coconut oil is melted and cooled to room temperature to prevent the heavy cream from curdling when mixed.
In a mixing bowl, combine the melted coconut oil and heavy cream. Whisk them together until they are fully incorporated and smooth.
Add the cacao powder and your choice of sweetener (stevia or allulose). If desired, sprinkle in the cinnamon. Whisk again until the mixture is uniform.
Add the almond butter (or your chosen nut/seed butter) to the mixture. Using a spatula, fold it in gently until everything is well blended.
Carefully pour the mixture into your silicone molds or ice cube tray. If using a solid tray, line it with parchment paper for easy removal.
Sprinkle cacao nibs or chopped nuts on top of each bomb for added texture and presentation, if desired.
Place the molds in the freezer and chill for at least 1-2 hours, or until completely firm.
Once set, pop the Cocoa Fat Bombs out of the molds and enjoy! Store leftovers in an airtight container in the freezer.