Preheat oven to 350 F. Line a baking sheet with parchment paper or a silicone mat. In a bowl, mix together the peanut butter, vanilla, egg, almond flour, and sweetener until combined.
Bake for 12-15 min until golden brown. Let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool a little more (about 10 minutes).