Preheat the oven to 350 degrees.  Line a couple baking sheets with parchment and set aside.

In the bowl of a stand mixer, combine the softened butter, cookie butter, sugar and brown sugar.  Using the paddle attachment, cream until smooth and thoroughly combined.

Add in the egg and vanilla.  Mix well, scraping down the sides often.

Add in the baking soda, salt and flour.  Mix well, scraping down the sides often.

Add in the Biscoff cookies - mixing will break them into smaller pieces.  Mix thoroughly, scraping the sides often.

Fold in the white chocolate chips.

Using an ice cream scoop, divide the cookie dough into equal portions and place on the prepared baking sheets with about 2 inches around each dough ball.

Using the flat of your palm or a flat drinking cup or similar, flatten the dough to about ½ of an inch thickness.

Bake in the preheated oven for 10-12 minutes or until the centers are set.  Allow to cool.