Preheat the oven to 350 degrees.

In a bowl, blend together the peanut butter, egg, vanilla and Swerve until a smooth dough forms.

Mix the chocolate chips into the dough.

Form the dough into 15 even balls, and place onto a parchment lined baking sheet.

Press the balls of dough down in a criss cross pattern using the tines of a fork.

Bake the cookies for 12 minutes.