You Will Need:
1 Egg Yolk
6 Tablespoons Softened Butter
Rum or Rum Extract
Preheat oven to 350 degrees. Line a baking sheet with parchment paper.
Mix Kookie Mix, Egg Yolk and Butter to form dough. Roll dough into balls, make a slight indentation in ball using your finger or back or a measuring spoon.
Bake 10-12 minutes. Remove and let cool completely.
While the thumbprints are baking make Frosting. Follow the basic Buttercream recipe linked above and add either up to 2 Tablespoons Spiced Rum or 1/4 teaspoon of Rum extract.
Once Kookies have cooled, pipe frosting on to the Thumbprints and dust with nutmeg.
Note: you can flavor your frosting with Keto eggnog or with eggnog flavoring.
1.5 Net Carb per Thumbprint