01 - Line a baking sheet with parchment paper. Scoop 12 heaping teaspoons of Biscoff spread onto the prepared sheet. Freeze for at least 30 minutes until completely solid and easy to handle.
02 - Preheat oven to 350°F. Line a second baking sheet with parchment paper and set aside.
03 - In a large mixing bowl, beat the softened butter, brown sugar, and granulated sugar together using an electric mixer on medium speed until light and fluffy, approximately 2-3 minutes.
04 - Add the egg and vanilla extract to the butter mixture. Beat until fully incorporated and smooth, scraping down the sides of the bowl as needed.
05 - In a separate medium bowl, whisk together the flour, baking soda, and salt until evenly distributed.
06 - Gradually add the dry ingredients to the wet mixture, mixing on low speed just until combined. Do not overmix. Fold in the white chocolate chips and crushed Biscoff cookies by hand.
07 - Scoop approximately 2 tablespoons of dough per cookie. Flatten each portion in your palm, place a frozen Biscoff ball in the center, and carefully wrap the dough around it, sealing completely so no filling is visible.
08 - Arrange the stuffed dough balls on the prepared baking sheet, leaving 2 inches of space between each. Refrigerate for 15 minutes to prevent excessive spreading.
09 - Bake for 11-13 minutes, or until edges are lightly golden and centers appear set but slightly soft. Remove from oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack.
10 - For the optimal lava experience, serve warm. If baking ahead, reheat in the microwave for 10-15 seconds before serving.