Introduction

This rich and indulgent Chocolate Oreo Cake combines classic chocolate layers with a creamy Oreo buttercream and a luscious chocolate ganache. Perfect for celebrations or whenever you need a show-stopping dessert, this cake is sure to impress with its irresistible flavors and textures.

A round, layered cake covered in light gray cookies and cream frosting with tiny dark cookie crumbs mixed in, topped with a smooth, shiny chocolate glaze dripping down the sides in uneven streams. Around the edge of the top, alternating swirls of matching cookies and cream frosting and whole sandwich cookies stand upright, creating a decorative border. The top center is a smooth circle of chocolate without decoration. The cake sits on a white plate surrounded by cookie crumbs and a few cookie pieces, all placed on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Ingredients

2 cups (260g) all-purpose flour
2 cups (414g) sugar

¾ cup (85g) natural unsweetened cocoa powder
2 teaspoons baking soda

1 teaspoon salt
2 large eggs

1 cup (240ml) milk
1 cup (240ml) vegetable oil
1 ½ teaspoons vanilla extract

1 cup (240ml) boiling water
3 cups (672g) unsalted butter, room temperature
8-9 cups (920g-1035g) powdered sugar

3 cups (414g) Oreo crumbs (about 33 Oreos)
1 teaspoon vanilla extract
6-7 tablespoons (90ml-105ml) heavy whipping cream

Pinch of salt
12 Oreos (chopped)
6 ounces (1 cup | 169g) semi-sweet chocolate chips

½ cup (120ml) heavy whipping cream
Oreos (optional, for decoration)

Instructions

Step 1: Prepare three 8-inch cake pans by lining the bottoms with parchment paper circles and greasing the sides.

Step 2: In a large bowl, whisk together the flour, sugar, cocoa powder, baking soda, and salt.
Step 3: Add the eggs, milk, and vegetable oil to the dry ingredients and mix well until combined.
Step 4: Stir vanilla into the boiling water, then add this mixture to the batter and mix thoroughly.

Step 5: Divide the batter evenly among the prepared pans and bake at 300°F (150°C) for about 30-33 minutes, or until a toothpick inserted comes out with a few moist crumbs.
Step 6: Remove the cakes from the oven and cool in pans for 10 minutes, then transfer to wire racks to cool completely.
Step 7: While the cakes cool, make the Oreo buttercream. Beat the butter until smooth.

Step 8: Gradually add 4 cups of powdered sugar, mixing until smooth and creamy.
Step 9: Add the vanilla extract, Oreo crumbs, and salt, then mix until well incorporated.
Step 10: Add an additional 4 to 5 cups of powdered sugar and mix until smooth. Add heavy cream as needed to achieve a smooth, spreadable consistency.

Step 11: Set aside about 3 ½ cups of the Oreo buttercream and fold in the chopped Oreos to create the cake filling. Reserve the remaining buttercream for frosting.
Step 12: Once the cakes are completely cool, level the tops by removing any domes with a serrated knife.
Step 13: Place the first cake layer on a cake plate and spread half of the chopped Oreo filling evenly over it.

Step 14: Add the second cake layer and spread the remaining chopped Oreo filling evenly on top.
Step 15: Place the final cake layer on top and frost the outside of the cake with the reserved Oreo buttercream.
Step 16: To make the ganache, place the semi-sweet chocolate chips in a medium bowl.

Step 17: Heat the ½ cup heavy whipping cream until just boiling, then pour it over the chocolate chips. Let sit for 2-3 minutes before whisking until smooth.
Step 18: Drizzle the ganache around the edges of the cake, then pour the remaining ganache over the top and spread evenly.
Step 19: Allow the ganache to set slightly. Pipe the remaining buttercream around the top edge of the cake and place an Oreo cookie between each piped swirl.

Step 20: Sprinkle additional Oreo crumbs over the cake if desired, then serve. For best flavor and texture, keep the cake well covered.

Tips & Variations

Use room temperature ingredients for smoother batter and frosting.
For a stronger Oreo flavor, increase the amount of Oreo crumbs in the buttercream or add a splash of vanilla or almond extract.

Try using different types of Oreos or chocolate chips to customize the taste.
If you prefer a lighter cake, swap half the vegetable oil with applesauce for a moist but lower-fat option.
Make sure the ganache is slightly cooled before drizzling to control the drip effect better.

Storage

Store the cake covered at room temperature for up to 2 days, or refrigerate for 3-4 days to keep it fresh longer. Before serving refrigerated cake, allow it to come to room temperature for best flavor and texture. Leftover cake can also be wrapped tightly and frozen for up to 2 months; thaw overnight in the refrigerator before serving.

How to Serve

A slice of three-layer chocolate cake sits on a white plate with a rough metallic texture, each dark brown cake layer filled with a light brown creamy frosting mixed with small cookie pieces. The top layer is covered with a smooth light brown frosting, and a thin drizzle of dark chocolate glaze runs along one side. The cake looks moist and soft with fine crumb texture. A silver fork rests beside the slice, and there is a bowl of chocolate sandwich cookies and some cookie crumbs scattered around on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I bake this cake in different-sized pans?

Yes, but baking times will vary depending on the pan size. Adjust baking time accordingly and check doneness with a toothpick.

How do I prevent the ganache from melting the frosting?

Make sure the ganache is cooled to room temperature before pouring over the chilled cake. This helps the ganache set quickly without melting the buttercream underneath.