Toss the raw macadamia nuts into a high-powered blender or food processor, and grind into a nut butter consistency.
Add the rest of the ingredients, and process again until smooth and creamy.
Transfer the batter to a plate lined with parchment paper, and smooth with a spatula.
Place in the freezer for 30 minutes to an hour, or until firm.
Slice off the edges, then cut into bite-sized squares and serve immediately! These squares will melt quickly at room temperature, so it's best to serve them directly from the freezer.
Notes
For best flavor, use raw macadamia nuts, rather than roasted.