Prep your tray. Line a baking sheet with parchment paper or a silicone mat. This keeps the clusters from sticking and makes cleanup easy.
Toast the nuts (optional but recommended). Add macadamia nuts to a dry skillet over medium heat.
Stir for 3–5 minutes until lightly golden and fragrant. Let cool slightly. Toasting deepens flavor and adds extra crunch.
Melt the chocolate. Place the chocolate and coconut oil in a heat-safe bowl.
Melt in the microwave in 20–30 second bursts, stirring after each, until smooth. Or use a double boiler over gently simmering water.
Sweeten and flavor. Stir in vanilla and your preferred keto sweetener, if using. Taste and adjust sweetness. Important: Use powdered sweetener to avoid graininess.
Combine. Add the macadamia nuts to the melted chocolate and stir until every piece is well coated.
Form the clusters. Use a spoon to drop heaping tablespoons of the mixture onto the prepared tray.
Keep them roughly the same size so they set evenly.
Finish with salt. Sprinkle a tiny pinch of flaky sea salt over each cluster. Don’t overdo it—just a few crystals per cluster.
Chill. Refrigerate for 20–30 minutes, or until firm. If you’re in a rush, the freezer sets them in about 10 minutes.
Serve. Enjoy straight from the fridge for the best snap and texture.