Start by placing the Biscoff cookies into a food processor and blending until they become fine crumbs. This step is important because evenly crushed cookies help create a smooth truffle texture. Once done, set the crumbs aside in the processor.
Slightly warm the Biscoff cookie butter until soft, then add it along with the softened cream cheese to the cookie crumbs. Blend again until the mixture looks thick and fully combined. The mixture should hold together when pressed.
Scoop out small portions of the mixture and roll them between your palms to form even balls. Place them on a parchment-lined baking sheet. Refrigerate for about one hour so they become firm and easier to coat.
While the truffles chill, melt the white chocolate in a microwave-safe bowl. Heat it in short intervals, stirring in between, until smooth and glossy. Be careful not to overheat or the chocolate may seize.
Dip each chilled truffle into the melted white chocolate, ensuring it’s fully coated. Let the excess chocolate drip off before placing the truffle back on the lined baking sheet. Work quickly to keep the chocolate smooth.
Return the coated truffles to the refrigerator and let them set completely. Once firm, drizzle with extra melted Biscoff cookie butter if desired. Allow the drizzle to set before serving.