An explosion of Oreos in every bite. This Cookies n Cream Layer Cake is made with crushed up Oreos in simple white cake mix with layers of cookies n cream buttercream and chocolate ganache in between, then topped with a chocolate ganache and Oreos! An Oreo lover's dream!
Preheat oven to 350F. Grease 3 8-inch cake pans and set aside. Follow instructions on cake mix box.
Follow instructions on cake mix box. In a large Ziploc bag, crushed the Oreos into small pieces using a rolling pin or something similar. Fold the crushed Oreos into the cake batter.
Pour batter into cake pans and bake as directed: about 30mins or until toothpick comes out clean. Remove from heat and set aside.
Allow cakes to cool.
After 4 cups add 2-4 tbsp of heavy whipping cream and vanilla extract.
In a separate bowl, combine butter and shortening until creamy. Add in powdered sugar 1-2 cups at a time, mixing well in between.
Add the remaining cups of powdered sugar and heavy cream until its to the desired consistency. Last add in cookie crumbs.
For the ganache, Pour 1 1/2 cups of heavy whipping cream into a bowl and microwave for 30 seconds. Add in chocolate chip morsels and stir until smooth.
Place first layer of cake on plate and top with oreo buttercream. Then add a thin layer of chocolate ganache.
Next add the second layer of cookies n cream cake and then top with more cookies and cream buttercream and a thin layer of chocolate ganache.
Then add the third layer of cake on top. Smooth buttercream around all sides of the cake.
Use a piping bag, squeeze bottle or spoon to pour ganache around the edges letting it slightly drip over the sides and then cover the top with chocolate.
Cut 5-7 Oreos in half to decorate the top and pipe swirls of buttercream in between.
Add the last of the Oreos to the processor and sprinkle around the bottom of the cake or in a ring around the top.