Prepare the crust by mixing graham cracker crumbs with melted butter and pressing into the bottom of a springform pan. Chill for 15 minutes.
Make the coffee cheesecake filling by dissolving instant coffee in hot water, then mixing with cream cheese, powdered sugar, and vanilla until smooth.
Whip heavy cream until stiff peaks form and gently fold into the coffee cream cheese mixture. Pour over the chilled crust and smooth the top.
Chill the cheesecake in the refrigerator for at least 240 minutes or overnight for best results.