Start by crushing 20 Oreo cookies into fine crumbs. Reserve a handful for garnish.
Combine the Oreo crumbs with melted butter. Press this mixture into a pie dish to form the crust.
In a saucepan, heat 1 cup of heavy cream until it simmers. Pour it over the chocolate chips in a bowl. Let it sit for a minute, then stir until smooth.
Mix in granulated sugar, vanilla extract, and a pinch of salt into the chocolate mixture.
Whip the remaining 1/2 cup of heavy cream until stiff peaks form.
Gently fold the whipped cream into the chocolate mixture until well combined.