Step 1: Prepare the crust. In a medium bowl, combine the graham cracker crumbs and melted butter until well mixed. Press the mixture firmly into the bottom of a 9-inch springform pan. Place in the freezer while you prepare the filling.
Step 2: Make the filling. In a large bowl, beat the softened cream cheese with an electric mixer until smooth and creamy. Add the powdered sugar and vanilla extract, beating until just combined.
Step 3: Fold in whipped cream. In a separate bowl, whip the heavy cream until stiff peaks form. Gently fold the whipped cream into the cream cheese mixture until no streaks remain.
Step 4: Add caramel and Twix. Gently fold in ¾ cup of caramel sauce and about two-thirds of the chopped Twix bars into the cheesecake filling.
Step 5: Assemble the cheesecake. Pour the cheesecake filling over the chilled graham cracker crust in the springform pan. Spread evenly with a spatula.
Step 6: Chill. Drizzle with extra caramel sauce and sprinkle the remaining chopped Twix bars on top. Cover loosely with plastic wrap and refrigerate for at least 6 hours, or preferably overnight, until firm.
Step 7: Serve. Once chilled, carefully remove the cheesecake from the springform pan. Slice and serve cold. Enjoy!