Ok, Oreo cookie lovers. This one’s for you! After creating this Cookies & Cream Ice Cream Cake last summer, I’ve been dying to make an all-cake version. So I finally bought a pack of Oreos and took to the kitchen for some experimenting and I am oh so happy with the results. Behold:

This Oreo Cookies & Cream cake all begins with my favorite One Bowl Chocolate Cake recipe. Just like the name implies, it’s the easiest cake in the world to make. All the ingredients are mixed into one bowl, and the results are magic: moist, decadent chocolate cake that’s packed with flavor and as easy as whipping up a batch of cake mix! It’s the perfect base flavor for this Oreo cake masterpiece.

Now let’s talk about the Oreo buttercream, because it’s what takes this cake beyond! You’ll want to use a food processor to blend up some Oreo cookies (filling removed), but if you don’t have one on hand, you can always place the cookies in a ziplock bag and smash them up with a rolling pin. The second option is a little more time consuming because you want the Oreo bits to be as small as can be, but it’s a way. After blending the Oreos into as fine of a crumb as you can, you simply add them to the buttercream recipe as a final step. Just look how pretty those little flecks of Oreo are:

After filling and frosting the chocolate cake with Oreo buttercream, I chose to add a chocolate ganache drip for some design intrigue, then added some pretty piping, Mini Oreos, and a few SprinklePop sprinkles (the Wedding White mix) on top to tie it all together. However you choose to decorate, I can be sure of one thing: you’re going to want to eat a piece immediately. Unless, of course, you’ve been snacking on cake scraps and buttercream like I always do!

Update 2020: I’ve changed the measurements in the recipe below to make exactly enough batter for three 6-inch cake pans or two 9-inch cake pans. I always do triple 6-inch layers when making cakes (I like ‘em tall!), and since I get so many questions on how to convert the original recipe into three 6-inch layers I thought I’d just do the math for you. So same great recipe, with the most requested amount of batter! 

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Oreo Cookies & Cream Cake Recipe

Layers of decadent chocolate cake, filled and frosted with Oreo buttercream. Perfect for any cookies & cream lover!

Prep Time 15 minutes

Cook Time 45 minutes

Total Time 1 hour

Ingredients

Chocolate Cake

• 2 Cups (265g) all purpose flour
• 1 2/3 Cups (340g) white granulated sugar
• 2/3 Cup (60g) unsweetened natural cocoa powder (not Dutch process)
• 2 tsp baking soda
• 1 tsp baking powder
• 1/2 tsp kosher salt
• 1/2 Cup (120ml) vegetable oil
• 2 eggs, room temperature
• 1 1/2 tsp vanilla extract
• 1 Cup (240ml) full-fat buttermilk*, room temperature DIY recipe in the notes
• 1 Cup (240ml) hot water

Oreo Buttercream

• 2 Cups (452g) unsalted butter, room temperature
• 6 Cups (720g) powdered sugar
• 4 tsp vanilla extract
• 4 Tbsp whole milk, room temperature
• 1/4 tsp kosher salt
• 18 Oreo cookies, filling removed

Instructions

Make The Cake

• Preheat the oven to 350ºF and prepare three 6-inch or two 8-inch cake pans by spraying the sides with cooking spray and fitting the bottoms with a wax paper or parchment cake circle. 
• Place all of the dry ingredients into the bowl of a stand mixer and stir on low for 30 seconds to fully combine them. Add the vegetable oil, eggs, vanilla, and buttermilk and mix on low until just combined. With the mixer still on low, add the hot water in a slow stream, then turn the mixer to medium and beat until smooth, about 2 minutes. The batter will be very thin. 
• Pour into prepared cake pans no more than 2/3 full and bake for 32-36 minutes, until a wooden toothpick inserted comes out clean. Cool completely.

Make The Oreo Buttercream

• After removing the filling from the Oreo cookies, use a food processor to blend them into a fine crumb. Set aside.
• In the bowl of a stand mixer, cream the butter on med-high until light and fluffy (about 5 minutes), scraping down bowl and paddle a few times in between.
• Add powdered sugar a few cups at a time, scraping down bowl and paddle between intervals. Mix on medium until fully incorporated. 
• Turn mixer to low and add vanilla, milk, and salt. Mix on medium for one minute. Scrape down bowl and paddle and add the Oreo cookie crumbs. Mix for another minute on medium until incorporated.

Assembly

• Fill and frost the Chocolate Cake layers with Oreo buttercream. If you want to recreate the same look as pictured, chill the frosted cake for 20 minutes before adding a chocolate ganache drip. I used Wilton tips 1M and 4B to pipe rosettes and open stars as a border around the top edge, then added Mini Oreos and these sprinkles. 

Notes

DIY Buttermilk recipe: add 1 Tbsp of white vinegar to a jar and top it with 1 Cup of whole milk. Stir and let sit for 15 minutes before using in the recipe. 

Make ahead tips: the Chocolate Cake can be made ahead and stored at room temperature, covered tightly in plastic wrap, for up to two days. Alternatively, you can cover with plastic wrap and store in the freezer for up to two months before thawing to room temperature. 

The Oreo Buttercream can be made ahead and stored at room temperature in an airtight container for up to one day. Alternatively, you can store it in an airtight container in the refrigerator for up to two weeks. When you’re ready to use it, bring it back to room temperature and re-whip with your stand mixer to bring it back to frosting consistency. 

Did you make this recipe? I want to know how it went! Let me know in the comments below or tag me on Instagram so I can see what you’re caking. I love to see your creations!

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