In a food processor, pulse the Biscoff cookies until they are in fine crumbs. If you don't have a food processor, you can also use an electric mixer. Just add in the cookies a few at a time so they don't go flying out of the bowl.
Use a wooden spoon or an electric mixer on its slowest speed to mix the softened cream cheese into the Biscoff cookies. Use a one tablespoon measuring spoon to roll each cookie ball.
Place the cookie balls in a single layer (without touching) and refrigerate them for 30 minutes.
Before you remove the truffles from the refrigerator, stir together the chopped white chocolate and milk in a microwave safe container. Microwave them for 30 seconds and stir until smooth. If the white chocolate still isn't melted, microwave for an additional then seconds.
Remove the truffles from the fridge and use a spoon to lightly drizzle each truffle with the melted white chocolate. Serve.
Cream cheese takes about thirty minutes to come to room temperature. To make it easier to remove from the packaging, completely open the foil layer while the cream cheese is still cold. This way it doesn't get stuck to the foil.
Use your hands to squish together the dough before rolling it into balls. This prevents creases that can cause the cookie balls to fall apart.
If you would like to round out the flavor of your truffles, you can add ¼ teaspoon of pure vanilla extract to the cookie balls. This helps mute the strong cinnamon flavor in the Biscoff cookies. This is exceptionally useful outside of the holiday season when you desire flavors that are less wintery.
The white chocolate hardens pretty quickly. Don't dilly-dally with getting the drizzle onto the cookie balls or you may have to microwave it again.
Once your Biscoff cookie truffles are made, they will stay fresh in the refrigerator for up to a week. If you're preparing ahead or made too many, then they can be frozen for up to six months. Just make sure that you freeze them in a single layer before transferring them to a freezer-safe container. This will keep them from sticking together.
Keep your Biscoff cookie truffles in the refrigerator until ready to serve. They will maintain their shape much better this way. During the gathering they won’t go bad as they get warm, they’ll just become gooier. Similar to fresh cookie dough.