Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a mixing bowl, combine the peanut butter, powdered erythritol, coconut flour, softened butter, egg, vanilla extract, and a pinch of salt. Stir well until all the ingredients are thoroughly combined and a dough forms.
Take small portions of the dough and roll them into balls, approximately 1 inch in diameter. Place the dough balls onto the prepared baking sheet, leaving some space between them.
To create a crisscross pattern on the cookies, lightly press each dough ball with a fork, first horizontally and then vertically.
Bake the cookies in the preheated oven for about 12-15 minutes, or until they are golden brown around the edges.
Once baked, remove the cookies from the oven and let them cool on the baking sheet for a few minutes. Then, transfer them to a wire rack to cool completely.
Enjoy these delicious Keto Peanut Butter Cookies with Coconut Flour as a delightful snack or dessert.