Make the Crust: In a bowl, mix the graham cracker crumbs, sugar, and melted butter until everything is well blended. Press this mixture firmly into the bottom of a 9-inch springform pan. Place it in the freezer while you prepare the filling.
Make the Cheesecake Ice Cream Base: In a large bowl, beat the softened cream cheese until it is smooth and creamy. Add the sweetened condensed milk, heavy cream, and vanilla. Mix until everything is smooth. Then, stir in the melted chocolate chips and cocoa powder until fully mixed.
Assemble and Freeze: Pour the cheesecake ice cream mixture over the chilled crust. Smooth the top with a spatula, cover with plastic wrap, and freeze for at least 6 hours or overnight until it is firm.
Serve It Up: Before serving, drizzle the top with chocolate sauce, swirl on some whipped cream, and sprinkle with extra graham cracker crumbs for that perfect finish.