In a medium bowl, cream together the cookie butter and butter until smooth.
Add in the powdered sugar and vanilla extract, and mix until well combined.
Gradually add in the flour, mixing until the dough comes together.
Roll the dough into small balls, about 1 inch in diameter. Place them on a wax paper-lined baking sheet and refrigerate for at least 30 minutes.
Melt the chocolate chips or melting chocolate in a microwave-safe bowl or over a double boiler.
Dip the truffles into the melted chocolate, using a toothpick to hold them if necessary. Place them back on the wax paper-lined baking sheet.
Allow the truffles to set in the refrigerator for at least 30 minutes before serving. Enjoy!
Notes
If you don't have cookie butter, you can make your own by blending together equal parts cookie crumbs and unsalted butter. You can also use Biscoff spread or Speculoos spread as a substitute.