Oreo Olallieberry Chocolate Layer Cake

Ingredients

For chocolate cake

• 2 cups sugar
• 2 cups flour
• 1/3 cup black cocoa powder
• 2/3 cup Dutch-processed cocoa powder
• 1 teaspoon salt
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 2 eggs, beaten
• 1/2 cup vegetable oil
• 1 cup whole milk
• 1 cup hot coffee

For cocoa-olallieberry buttercream

• 1/2 cup olallieberry puree, from about 3/4 cup olallieberries
• 2 tablespoon black cocoa, sifted
• 11 ounces sugar
• 5 ounces water
• 5 egg whites
• Pinch of cream of tartar, optional
• 2 ounces sugar
• 4 sticks (1 pound) butter, at room temperature
• Food coloring, if desired
• Oreo cookies, chopped into sixths

For dark chocolate ganache

• 3 ounces dark chocolate, chopped
• 2 1/2 ounces manufacturing or heavy whipping cream
• 1 tablespoon butter

Preparation

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