01 -
Portion the Biscoff into 15 heaped teaspoons onto a parchment-lined tray, leaving space between each. Transfer the tray to the freezer and freeze until solid, about 60 minutes.
02 -
Set the oven to 190°C (170°C fan) and position racks to allow even airflow. Line 2–3 large baking trays with parchment paper.
03 -
In a large bowl, beat the softened butter and light brown sugar until pale and fluffy. Add the vanilla and the egg, then beat until the mixture is smooth and homogenous.
04 -
Whisk together the plain flour, cocoa powder, salt, bicarbonate of soda and cornflour in a separate bowl until evenly distributed.
05 -
Add the dry ingredients to the butter mixture and fold until just combined. Stir in the finely chopped white chocolate until evenly dispersed.
06 -
Using a 5 cm cookie scoop (or portioning tool), portion the dough into 15 even balls and set them on a tray. Work quickly so the frozen Biscoff remains solid while you assemble.
07 -
Flatten each dough portion slightly, place one frozen Biscoff portion in the centre and wrap the dough fully around it to form a sealed ball. Arrange a maximum of 6 cookies per tray to allow for spreading.
08 -
Bake the cookies for 11–13 minutes, rotating trays halfway if necessary. Remove when the edges are set but centers remain soft for maximum gooeyness; longer baking time yields a firmer centre.
09 -
Allow cookies to cool on the tray for a few minutes, then transfer to a wire rack. Consume warm for best texture; store at room temperature in an airtight container for up to 3–4 days and reheat briefly in the microwave to restore gooeyness.