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–+ servings
A layered Oreo cake topped with Oreo cookie pieces and swirls of frosting on a decorative cake stand.

Oreo Cake

Jennifer Ryan
Indulge in this ultimate Oreo cake recipe, made with layers of rich chocolate sponge and cookies ’n’ cream frosting!
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Prep Time 30 minutes
Cook Time 35 minutes
Total Time 1 hour 5 minutes
Course Dessert, Snack
Cuisine American
Servings 16
Calories 676 kcal

Equipment

Ingredients
  

For the cake

Oreo Buttercream Frosting

Optional Extras for Decorating

  • 4-6 Oreos optional - to decorate the sides of the cake (blended into fine crumbs)
  • 8 Oreos optional - to decorate the top of the cake

Instructions
 

Make the Cake

  • Preheat oven to 160°C (fan). Grease and line three 8-inch (20cm) cake tins with parchment paper.
    Temperature settings of 160°C and 320°F displayed in bold orange text.
  • In a large mixing bowl, whisk together flour, cocoa powder, caster sugar, light brown sugar, baking powder, and bicarbonate of soda.
    175 Grams Plain Flour, 25 Grams Cocoa powder, 1 Teaspoon Baking powder, ¼ Teaspoon Bicarbonate of soda, 200 Grams Caster sugar, 200 Grams Light brown sugar
  • In a heatproof bowl, melt the dark chocolate and butter together over a saucepan of simmering water (or in short microwave bursts).
    225 Grams Dark chocolate, 225 Grams Unsalted Butter
    Bowl with chocolate chunks and butter, ready for melting.
  • Dissolve the coffee granules in 125ml boiling water, then stir into the melted chocolate mixture until smooth.
    1 Tablespoons Instant coffee granules
  • In a separate bowl, whisk the eggs and buttermilk together.
    4 Medium Eggs, 75 Milliliters Buttermilk
  • Combine the chocolate mixture and egg mixture with the dry ingredients, mixing until smooth and slightly runny (no lumps).
    Bowl of chocolate fudge cake batter with a mixer attachment.
  • Divide batter evenly between tins. Bake for 25–30 minutes.
    Two round cake pans filled with chocolate fudge cake batter.
  • Test with a skewer, if it comes out clean, the cakes are done. If not, bake for a few more minutes.
    Three baked chocolate cake layers in round pans on a marble surface.
  • Allow cakes to cool in tins for 10 minutes, then transfer to a wire rack to cool completely.
    A round, baked chocolate cake cooling on a wire rack.

To make the Oreo buttercream

  • In a stand mixer, beat together butter, milk, and vanilla extract.
    454 Grams Unsalted butter, 2 Teaspoons Vanilla extract, 2 Tablespoons Milk
    A mixing bowl filled with creamy yellow buttercream frosting.
  • Gradually sift in the icing sugar, mixing on low until incorporated.
    466 Grams Icing sugar
    Sifting powdered sugar into a mixing bowl for cake preparation.
  • Increase to high speed and beat until light and fluffy (5–15 minutes).
    Creamy frosting in a mixing bowl, ready for cake decoration.
  • Finely crush the Oreos in a blender or food processor. Stir into the buttercream until evenly combined.
    16 Oreos
    A mixing bowl with cream and crushed chocolate Oreo cookies ready for making Oreo cake.

Assemble the cake

  • Place one cake layer onto a serving plate or cake stand. Spread 1 cup of frosting evenly over the top.
    A hand spreading Oreo frosting on a chocolate cake layer on a white cake stand.
  • Repeat with the second and third cake layers.
    A layered cake with Oreo cream filling on a decorative cake stand, adorned with a red polka dot ribbon.
  • Cover the sides with frosting (or just a thin crumb coat if you prefer).
    A round Oreo cake with chocolate frosting and decorative swirls on top, displayed on a white cake stand with a red ribbon.
  • For extra decoration, pipe swirls of frosting around the top edge using a piping bag and star tip.
    Top view of a decorated Oreo cake with swirls of frosting on the edges.
  • Decorate with whole Oreos on top and Oreo crumbs around the sides if desired.
    4-6 Oreos, 8 Oreos
    A layered Oreo cake with frosting and cookie decorations on a white cake stand.
  • Chill the cake in the fridge for at least 2 hours before slicing.
    A slice of Oreo cake showing layers of chocolate cake and cream frosting, topped with Oreo cookies pieces.

Notes

Tips and Tricks
  • Room Temperature Ingredients: Make sure butter and eggs are at room temperature for smoother mixing.
  • Level Cake Layers: If your cakes dome slightly, trim the tops before stacking for even layers.
  • Buttermilk Substitute: If you don’t have buttermilk, mix 75ml milk with ½ tsp lemon juice or vinegar and let sit for 5 minutes.
  • Frosting Trick: For ultra-smooth buttercream, beat it for at least 10 minutes. It gets fluffier the longer you whip it.
  • Decoration Ideas: Use mini Oreos, drizzle melted chocolate, or add sprinkles for a fun twist.
  • Storage: Store in the fridge for up to 5 days. Bring to room temperature before serving for the best flavor.

Nutrition

Calories: 676kcalCarbohydrates: 76gProtein: 5gFat: 41gSaturated Fat: 24gPolyunsaturated Fat: 2gMonounsaturated Fat: 12gTrans Fat: 1gCholesterol: 119mgSodium: 141mgPotassium: 221mgFiber: 3gSugar: 58gVitamin A: 1010IUCalcium: 61mgIron: 5mg
Keyword best chocolate cake, birthday cake, cake, cake decorating, cake frosting, cake topping ideas, celebration, celebration cake ideas, chocolate cake, chocolate fudge cake, classic cake, Oreo, Oreo cake, Oreos
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