Making Biscoff Speculoos Tiramisu is a delightful experience. Follow these simple steps to create this incredible dessert:

1. Prepare the Coffee Mixture: In a shallow dish, combine the cooled brewed coffee and coffee liqueur (if using). Set aside.
2. Whip the Cream: In a mixing bowl, whip the heavy cream until soft peaks form. Gradually add powdered sugar and vanilla extract, continuing to whip until stiff peaks form.
3. Combine Mascarpone: In another bowl, gently fold the mascarpone cheese into the whipped cream mixture until fully combined and smooth. Be careful not to deflate the whipped cream.
4. Dip the Cookies: Quickly dip each Biscoff cookie into the coffee mixture, ensuring they are soaked but not soggy. Lay them flat in a serving dish to form the first layer.
5. Layer the Mixtures: Spread a layer of the mascarpone mixture over the dipped cookies. Repeat this process, alternating layers of cookies and mascarpone until you reach the top of the dish.
6. Finish with Cocoa: Once you have assembled all layers, generously dust the top with cocoa powder for a classic tiramisu finish.
7. Chill: Cover the dish with plastic wrap and refrigerate for at least 4 hours, preferably overnight, to allow the flavors to develop.
8. Garnish: Before serving, sprinkle additional Biscoff cookie crumbs on top for added texture and flavor.

These steps will guide you in creating this delightful Biscoff Speculoos Tiramisu effortlessly!