In a separate bowl, combine flour salt and coco powder together.
In a large mixing bowl cream butter, erythritol, coconut sugar together until they fully combined.
Add in egg and vanilla, mix in.
Slowly add in the flour mixture, one cup at a time while mixing on low, until all the flour added in and completely combined.
Roll tsp sized ball of dough, place on parchment paper lined sheets, then flatten with a spoon or the palm of your hand. Try to keep the sizes uniform.
Bake at 350 F for 8-12 minutes.
Let cool, then fill with sugar-free buttercream frosting.
Notes
Add the needed ingredients and shape balls either with the palm or the back of the spoon. Enjoy these sugar-free homemade oreo cookies.