Brown the butter. Notes about how to brown butter are below the recipe.
Once the butter cools, add in the extract and sweetener.
Once the mixture is fully cooled, just before the butter hardens. I have put the mixture in the fridge for a few minutes and would keep checking on it. It can harden quicker than you think. There have been times when I would have to reheat the mixture. :)
Get your fat bomb molds and put some the mixture in. Leave room for the nuts.
Add the pecans and then add more of the mixture on top.
Place in fridge or freezer to harden.
Enjoy! To kick this up a notch, use roasted pecans.