Go Back Email Link

Easy Dreamy Oreo Cake

Indulge in this truly dreamy Oreo cake, featuring moist chocolate layers and a creamy marshmallow-Oreo frosting. Perfect for any celebration or a sweet treat!
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour
Cuisine American
Servings 12 slices
Calories 687 kcal

Equipment

  • Round Cake Pans
  • Hand Mixer
  • Large Bowls
  • Parchment Paper
  • Serrated Knife

Ingredients
  

For the Cake

  • 3 cups all-purpose flour 372g
  • 2 cups granulated sugar 400g
  • 1/2 cup unsweetened dark cocoa powder 40g
  • 2 teaspoons baking soda
  • 1 teaspoon salt
  • 1 1/2 cups hot water 355ml
  • 1/2 cup hot coffee 118ml or extra water
  • 3/4 cup vegetable oil 177ml
  • 2 tablespoons white vinegar 30ml
  • 1 teaspoon vanilla extract

For the Frosting

  • 1/2 cup unsalted butter 113g, softened
  • 1/2 cup vegetable shortening 95g
  • 1 jar marshmallow fluff 7 oz
  • 3 cups powdered sugar 339g
  • 1/2 to 1 teaspoon salt to taste
  • 1 teaspoon vanilla extract
  • 1-2 tablespoons heavy whipping cream 15–30ml
  • 10 Oreos crushed

Instructions
 

  • Preheat oven to 350°F (175°C). Grease and line two 8–9 inch cake pans.
  • Whisk flour, sugar, cocoa powder, baking soda, and salt in a large bowl.
  • Mix hot water, coffee, oil, vinegar, and vanilla in another bowl.
  • Combine wet and dry ingredients until smooth.
  • Divide batter and bake for 34–38 minutes. Cool completely.
  • Beat butter and shortening until creamy.
  • Add marshmallow fluff and mix until smooth.
  • Add powdered sugar, salt, vanilla, and cream. Beat until fluffy.
  • Frost first cake layer, add Oreos, stack second layer and repeat.
  • Decorate with extra crushed Oreos and serve.

Notes

Adjust frosting salt to taste. Reduce salt if using salted butter.
QR Code linking back to recipe