Preheat the oven to 375 degrees F.
Line a baking sheet with parchment paper and scoop out 12 tablespoons of cookie butter spread and place on the parchment paper. Place in the freezer while you prepare the dough.
In a standard mixer, combine the butter, granulated sugar and brown sugar. Since the butter is cold, it will take a minute or two to combine.
Add the cookie butter, egg, and vanilla and mix.
In a separate bowl, combine the dry ingredients: flour, baking soda, baking powder, cornstarch, cinnamon, and salt. Whisk.
Slowly pour the dry ingredients into the standard mixer with the wet ingredients. Combine.
Fold in the white chocolate chips, semisweet chocolate chips, and Biscoff cookie chunks. Add milk and stir together until it all comes together and a soft dough starts to form. This is going to be THICK at this point, so I like to use my KitchenAid to mix it until it comes together.
Scoop with a 2-inch cookie scoop, stuff with a tablespoon of the frozen cookie butter balls and roll so no cookie butter appears. Repeat with all 12 cookies.
Place on the prepared baking sheet. Bake for 10 to 14 minutes or until slightly golden on top.
This is a rich cookie, so enjoy it warm with a glass of milk!