Ingredients

  • FOR THE BUNDT CAKE:
  • 2 sticks Butter
  • 1/2 cups Dutch Process Cocoa, Such As Valrhona Or High-quality, Such As Scharffen Berger (See Note)
  • 3/4 cups Water
  • 2 cups Granulated Sugar
  • 1 cup Sour Cream
  • 1 Tablespoon Vanilla Extract
  • 2 whole Large Eggs
  • 2 cups All-purpose Flour, Stir Before Measuring
  • 1 teaspoon Baking Soda
  • 1/2 teaspoons Salt
  • Peanut Butter Mousse:
  • 1 cup Heavy Cream
  • 8 ounces, weight Cream Cheese, Softened
  • 1 cup Powdered Sugar
  • 1 cup Peanut Butter, Crunchy Or Creamy
  • Chocolate Glaze:
  • 1/3 cups Heavy Whipping Cream
  • 1/4 cups Light Corn Syrup
  • 1 teaspoon Vanilla Extract
  • 4 ounces, weight Bittersweet Chocolate

Method

  • Grease and flour a 10- to 12-cup Bundt pan. Heat oven to 350°.
  • Melt butter in a large saucepan over medium-low heat; add cocoa, stirring until smooth. Whisk in the water and remove from heat.
  • To the warm cocoa mixture, add the sugar, sour cream, 1 tablespoon vanilla, and eggs; whisk until smooth.
  • In another bowl combine the flour, soda, and salt. Add all at once to the first mixture, whisking until well blended.
  • Pour batter into prepared pan. Bake for 40 to 45 minutes, or until it feels firm to the touch and has slightly pulled away from the sides of the pan.
  • Cool in pan on a rack for 20 minutes. Carefully loosen the cake with a knife and invert onto a large plate and cool completely.
  • For the Peanut Butter Mousse:
  • In the bowl of your mixer whip heavy cream until whipped cream forms. Remove from mixer bowl and place in a large glass bowl.
  • Return mixer bowl to your mixer and beat cream cheese until completely smooth. Add powdered sugar and peanut butter and beat until completely incorporated.
  • Slowly and gently fold the whipped cream into the peanut butter/sugar mixture until completely incorporated. Refrigerate until ready to assemble cake.
  • Prepare the Glaze:
  • Chop chocolate and put in a small bowl; set aside.
  • Combine remaining heavy whipping cream, corn syrup, and 1 teaspoon vanilla extract in a small saucepan. Cook the mixture, stirring, until mixture boils.
  • Pour over the chocolate and whisk until smooth. Let cool to room temperature. If too thick, thin with a little more cream.
  • Assemble Cake:
  • With bundt cake sitting on its flat side, slice cake in half horizontally. Remove the top layer and set aside.
  • Spread half of the peanut butter mousse on the bottom layer. Top with the other cake layer. Cover top of the cake with the remainder of the peanut butter mousse.
  • Pour and spread the chocolate glaze on top of the mousse. Refrigerate until ready to serve.
  • * (Note) If you're using a standard baking cocoa (not Dutch-process or high-quality) add 1/2 teaspoon more of baking soda to the dry ingredients.