Preparation

• Grease a 9-inch pie plate with cooking spray and set aside.
• Process chocolate sandwich cookies into fine crumbs in a food processor for about 45 seconds.
• Microwave ¼ cup butter in a small bowl on HIGH until melted, about 30 seconds.
• With food processor running, add melted butter; pulse until well combined, about 15 seconds more.
• Transfer crumb mixture to prepared pie plate. Firmly press crumbs into bottom and sides of plate evenly. Freeze for 15 minutes.
• Meanwhile, heat cream in saucepan over medium until steaming; do not boil. Pour hot cream over chocolate chips in a large heatproof mixing bowl; let stand for 3 minutes.
• Gently whisk chocolate mixture until smooth. Cut remaining ¼ cup butter into small pieces and stir until melted and incorporated.
• Pour chocolate mixture into chilled crust, spreading evenly. Chill pie uncovered until set, about 2 hours.
• Top with whipped cream just before serving and sprinkle with additional crushed cookies.