Keep the oven off, and whip up this five-ingredient icebox dessert. Ingredients - 20 cream-filled chocolate sandwich cookies (such as Oreo, from 1 [13.29-oz.] pkg.), plus more crushed cookies for garnish - 1/2 cup butter, divided - 1 1/4 cups heavy whipping cream - 1 (12-oz.) pkg. semisweet chocolate chips (such as Ghirardelli) - Sweetened whipped cream, for serving Directions 1. Grease a 9-inch pie plate with cooking spray, and set aside. Process chocolate sandwich cookies into fine crumbs in a food processor, about 45 seconds. Microwave 1/4 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. 2. Transfer crumb mixture to prepared pie plate. Firmly press crumbs into bottom and up sides of pie plate in an even layer. Freeze 15 minutes. 3. Meanwhile, heat cream in a saucepan over medium until steaming; do not boil. Pour hot cream over chocolate chips in a large heatproof mixin...