In reply to Yvette.

Not sure! Maybe you melted the ingredients for a bit too long. Next time, try heating the coconut oil and butter to the point where it's just easy to work with! That should prevent over separating during the prep. Another thing that could always help, it using powdered erythritol. Swerve makes one that's powdered. Anything powdered always helps thicken up a recipe if need be. Hope that helps!