OREO crust: – 25 chocolate sandwich cookies (like OREO's) – 5 Tbsp. butter, melted – 1/3 cup hot fudge ice cream topping Peanut Butter Filling: – 1 (8 oz.) pkg, cream cheese, room temperature – 1/2 cup powdered sugar – 2/3 cup creamy peanut butter – 1/2 cup milk – 1 (16 oz.) container, Cool Whip, thawed (divided) Toppings: – 1 cup Reese's mini peanut butter cups, halved – Cool Whip topping (remainder of the 16 oz. container listed above) – Hot fudge topping (optional)