No Bake Chocolate Peanut Butter Pie

20 Oreo cookies
2 tablespoons butter, softened 
1 package (8 oz.) cream cheese, softened 
1/2 cup peanut butter 
1-1/2 cups confectioners' sugar 
1 carton (16 ounces) whipped topping
15-20 miniature peanut butter cups, chopped 
1 cup cold milk 
1 package (3.9 ounces) instant chocolate pudding mix 

Instructions 
1. Crush 16 cookies; toss with the butter. Press into an ungreased 9-inch square dish; set aside. 
2. In a large bowl, beat the cream cheese, peanut butter and 1 cup confectioners' sugar until smooth. 
3. Fold in half of the whipped topping. Spread over crust. 
4. Sprinkle with chopped peanut butter cups. 
5. In another large bowl, beat the milk, pudding mix and remaining confectioners' sugar on low speed for 2 minutes. 
6. Let stand for 2 minutes or until soft-set. Fold in remaining whipped topping. 
7. Spread over peanut butter cups. 
8. Crush remaining cookies; sprinkle over the top. 
9. Cover and chill for at least 3 hours.