Add butter, cream, sweetener, and vanilla to a medium sauce pan. Cook over low heat, constantly stirring, until it comes to a boil and becomes thick and caramel colored.
This will take about 7 to 8 minutes.
Add pecans and stir until well combined.
Spoon into parchment paper or a silicone mat.
Allow them to cool in the refrigerator.
Enjoy!
Notes
Divide the batter into equal parts to create the clusters.
Seal in a ziplock baggie and refrigerate to keep.