01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the flour, rolled oats, baking soda, and salt until evenly distributed.
03 - In a large bowl, beat the softened butter, Biscoff spread, light brown sugar, and granulated sugar using an electric mixer until creamy and smooth.
04 - Add the egg and vanilla extract to the creamed mixture, mixing until fully incorporated.
05 - Gradually stir the dry ingredients into the wet mixture, mixing just until combined. Avoid over-mixing to maintain a tender texture.
06 - Gently fold the chopped Lotus Biscoff cookies into the dough, distributing evenly throughout.
07 - Scoop tablespoon-sized balls of dough onto the prepared baking sheets, spacing them 2 inches apart to allow for spreading.
08 - Bake for 10 to 12 minutes, until the edges are golden and the centers appear just set.
09 - Allow cookies to rest on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely.