Line a tray: Place parchment paper or a silicone mat on a baking sheet so the clusters release cleanly after chilling.
Melt the base: In a small saucepan over low heat, add dark chocolate, coconut oil (or butter), and nut/seed butter.
Stir until smooth and glossy. Remove from heat.
Whisk in flavor: Stir in cocoa powder, honey or maple syrup, vanilla, and salt. Mix well until no cocoa lumps remain.
Add oats: Fold in the rolled oats until every flake is coated.
If using add-ins like nuts or seeds, fold them in now. The mixture should be thick but scoopable.
Portion: Using a tablespoon or small cookie scoop, drop mounds onto the lined tray. Aim for 16–18 clusters to keep them around 100 calories each.
Shape: Gently press the tops so they hold together and look like neat little stacks.
Chill: Refrigerate for 25–30 minutes, or until firm.
For a quicker set, pop them in the freezer for 10–12 minutes.
Enjoy: Once set, transfer to an airtight container and store in the fridge. They’re best slightly chilled and snappy.