01 -
Preheat the oven to 350°F (175°C). Line a large baking sheet with parchment paper.
02 -
Add the beaten egg and Biscoff spread to a medium mixing bowl. Stir until glossy and mostly smooth.
03 -
Stir in the flour until a thick, soft dough forms and no dry streaks remain. Let it sit for 2-3 minutes if it looks loose.
04 -
Scoop 1-tablespoon portions onto the prepared baking sheet, spacing them 2 inches apart. Press each cookie gently with a fork.
05 -
Bake for 9-11 minutes, until the edges look set and lightly darker. The centers should still look a little soft.
06 -
Cool on the baking sheet for 8 minutes, then transfer to a wire rack to cool completely.