01 - Line a baking sheet with parchment paper. Scoop 12 heaping teaspoons of Biscoff spread onto the sheet. Freeze for at least 30 minutes until solid.
02 - Preheat oven to 350°F. Line another baking sheet with parchment paper.
03 - In a large bowl, beat softened butter, brown sugar, and granulated sugar until light and fluffy, about 2 minutes.
04 - Beat in egg and vanilla extract until fully incorporated.
05 - In a separate bowl, whisk together flour, baking soda, and salt.
06 - Gradually add dry ingredients to wet mixture, mixing just until combined. Do not overmix.
07 - Fold in white chocolate chips and crushed Biscoff cookies until evenly distributed.
08 - Scoop 2 tablespoons dough per cookie. Flatten in palm, place frozen Biscoff ball in center, wrap dough around and seal completely.
09 - Arrange stuffed dough balls on prepared baking sheet 2 inches apart. Refrigerate for 15 minutes.
10 - Bake for 11-13 minutes until edges are golden and centers are set. Cool on tray 5 minutes, then transfer to wire rack. Serve warm.