Brownie Bottom Peanut Butter Pie

http://asugarhigh.blogspot.fr/2011/06/brownie-bottom-peanut-butter-pie.html

Ingredients-

For Oreo crust-

1 package Oreo cookies - I used peanut butter oreos

¼ cup butter, melted

For the brownie layer-

½ cup butter, melted

¾ cup sugar

¾ cup brown sugar

1 Tbsp. vanilla

2 eggs

¾ cup flour

½ cup cocoa - I use Hershey's special dark

½ tsp. salt

½ cup peanut butter chips

For peanut butter layer-

8 oz cream cheese, room temperature

1 cup powdered sugar

1 tsp. salt

1½ cups creamy peanut butter

1 Tbsp. vanilla

2 cups heavy whipping cream