CRUST: Stir the ingredients for the crust together in a medium bowl. Pour the sandy crumbs into a 9-inch springform pan and pack tightly. I like to use a ¼ cup measuring cup (sprayed with cooking spray) to help pack in all the crumbs - the tighter, the better. Place the prepared crust in the freezer for 15-20 minutes or until completely firm.
WHIPPED CREAM: In the bowl of a stand mixer use the whisk attachment to beat the heavy cream on medium-high for 4-5 minutes or until stiff peaks form. Remove the whipped cream to a clean bowl and place in the refrigerator for now.
FILLING: Add the cream cheese, powdered sugar, and espresso powder to the bowl. With the mixer on medium speed, whip together until creamy and smooth. Stop the mixer, scrape down the sides and the bottom of the bowl with a rubber spatula. Add sour cream, lemon juice, and vanilla extract. Continue to whip the mixture on medium-high speed until the cheesecake mixture is lump-free; about 2 minutes. With the rubber spatula, fold in the prepared whipped cream. Be gentle, you don’t want to deflate the air from the whipped cream.
FREEZE: Spread the cheesecake mixture evenly over the prepared crust using an offset spatula. Cover with plastic wrap and refrigerate the cheesecake for at least 8 hours and ideally, about 12-14 hours. The longer the cheesecake sits, the more the flavor will develop.
BISCOFF MELT: Run a clean paring knife along the parameter of the springform pan to loosen the cheesecake from pan. Carefully remove the rim. Heat the cookie butter in a microwave-safe measuring cup in 20-second increments until melted. Use an offset spatula to spread the cookie butter quickly over the cheesecake. Be ready to go with an offset spatula in hand before pouring. Top with additional crumbled cookies on top. Serve immediately, or refrigerate for later!