Lightly grease and line the bottom of the springform pan. If you would like, line the sides of the springform pan as well.
Make the Oreo cookie crust by crushing Oreo cookies into fine crumbs. Add the melted butter and mix until the cookies start to clump together. Press the chocolate cookie crust along the bottom of a 9” springform pan. Chill in the fridge while making the peanut butter cheesecake filling. 2½ cups crushed Oreo cookies , 4 - 5 tablespoons melted butter
In a mixing bowl fitted with whisk attachment, whip the heavy cream to medium-stiff peaks. Transfer the whip cream to another bowl or use another mixing bowl to prepare the cream cheese and peanut butter filling.
1 cup (240 ml) cold heavy cream, ¼ cup (30 g) powdered sugar
Switch to a paddle attachment. Cream the cream cheese and creamy peanut butter on low until very smooth. Scrape the bowl and repeat mixing as needed until the cheeses are well combined. On low, mix in the sugar and vanilla extract until well combined. Scrape sides and bottom of the bowl again. Fold in the whipped cream until smooth and well combined.
3 8 oz. (678 g) blocks cream cheese, room temperature, 1 cup (256 g) creamy peanut butter, ¾ cup (90 g) powdered sugar, 1 teaspoon vanilla extract
Evenly spread the filling into the prepared pan with the cookie crust. Cover the pan and transfer the peanut butter chocolate cheesecake to the fridge to chill for at least 6 hours.
When it’s time to serve make the peanut butter ganache. Heat the heavy cream and creamy peanut butter to a very light simmer either in a small sauce pan over low heat or by heating the cream in the microwave for 45 - 60 seconds. Pour the cream over a bowl filled with chocolate chips or finely chopped chocolate. Cover the bowl with a dish towel for about 3 - 5 minutes and allow the chocolate to melt. Stir well to fully combine and create the ganache. Cool the ganache for 5 - 15 minutes as needed until room temperature. ½ cup (120 ml) heavy cream, 1 tablespoon creamy peanut butter, 4 oz. chocolate chips
Top the chilled peanut butter cheesecake with the room temperature chocolate ganache. If you like, top the ganache with chopped peanut butter cups. Return the cheesecake to the fridge for 1 hour to set the ganache. Then slice and enjoy the best no bake peanut butter cheesecake. 16 peanut butter cups, quartered