Put Oreo cookies and peanuts in a food processor and grind. Mix ground Oreo cookies and peanuts with the melted butter. Press the mixture onto the bottom and up the sides of a greased 10” springform pan to make the crust.
To make the filling- In a large bowl beat cream cheese with an electric mixer until smooth. Add eggs one at a time and beat after each egg is added. Add sugar, vanilla extract, peanut butter and whipping cream. Mix until smooth. Fold in pieces of Reese’s peanut butter cups with a rubber spatula. Pour filling into prepared crust.
Place into the oven and bake at 275 degrees for 1 ½ hour or until firm and lightly browned.
Combine sour cream and sugar and pour over the cheesecake. Return cheesecake to the oven and bake for 5 minutes.
Remove from the oven and allow cheesecake to cool for 1 hour. Place into the refrigerator for at least 4 hours.