Preparation Steps

• Preheat the oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
• In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.
• In another bowl, mix the buttermilk, vegetable oil, eggs, and vanilla extract until combined.
• Slowly add the wet ingredients to the dry ingredients and mix until just combined.
• Fold in 1 cup of crushed Oreo cookies gently into the batter.
• Divide the batter evenly between the two prepared pans and bake for 35-40 minutes, or until a toothpick inserted in the center comes out clean.
• Let the cakes cool in the pans for 10 minutes, then turn out onto a wire rack to cool completely.
• For the frosting, beat the cream cheese and butter together until smooth and fluffy.
• Gradually add the powdered sugar, beating well after each addition.
• Add the heavy cream and beat until light and fluffy.
• Fold in the remaining 0.5 cup crushed Oreo cookies to the frosting.
• Assemble the cake by spreading frosting between the layers and all over the top and sides.
• Refrigerate for at least 1 hour before serving to set the frosting.