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Crunchy Milk Chocolate Peanut Butter Cake

July 21, 2008

This weekend Greg and Justin had a party which was partially for Justin’s birthday. I made a cake I’ve made before, which is completely taken from Food & Wine. It takes about 4 hours to make, but it really is worth it. Since it’s baked in a 9 x 13 inch pan, it’s good for a crowd. The cake is the moistest I’ve ever had and the center is crunchy with a smooth peanut butter center. It’s as good as a peanut butter cup, but whole lot more work. I recommend lining the cake pan with parchment to prevent the cake from sticking when you turn it out, and putting the ganache in the freezer to make it stiffen up enough to spread on the cake. If anyone attempts this beast (it’s not hard, just time-consuming), let me know what you think!

Cake

  • 2 cups plus 2 tablespoons sugar
  • 1 3/4 cups all-purpose flour
  • 3/4 cup plus 2 tablespoons unsweetened cocoa powder
  • 1 1/2 teaspoons baking powder
  • 1 1/2 teaspoons baking soda
  • 1 1/2 teaspoons salt
  • 2 large eggs
  • 1 cup milk
  • 1/2 cup vegetable oil
  • 1 tablespoon pure vanilla extract
  • 3/4 cup plus 2 tablespoons boiling water

FILLING

  • 1/3 cup sliced almonds
  • 1/2 cup confectioners’ sugar
  • 2 large egg whites
  • 1 tablespoon granulated sugar
  • 1/2 cup salted roasted peanuts, coarsely chopped
  • 1 cup creamy peanut butter
  • 2 tablespoons unsalted butter, softened
  • 3 ounces milk chocolate, chopped
  • 1 cup Rice Krispie

GANACHE

  • 1 1/4 pounds milk chocolate, chopped
  • 1 3/4 cups plus 2 tablespoons heavy cream, warmed

DIRECTIONS

  1. Cake: Preheat the oven to 350°. Butter and flour a 9-by-13-inch cake pan. In a large bowl, whisk the sugar, flour, cocoa, baking powder, baking soda and salt. In a medium bowl, whisk the eggs, milk, oil and vanilla. Whisk the wet ingredients into the dry ingredients. Whisk in the boiling water. Pour the batter (it will be thin) into the prepared pan and bake for about 50 minutes, until a toothpick inserted in the center comes out clean. Let cool.
  2. Invert the cake onto a work surface. Working carefully, slice the cake horizontally (I use dental floss to do this and it works really well. Reduce the oven temperature to 325°.
  3. Filling: Trace a 9-by-13-inch rectangle onto a sheet of parchment paper and lay it on a large baking sheet. In a food processor, pulse the almonds with the confectioners’ sugar until they’re finely ground. In a bowl, using an electric mixer, beat the egg whites at medium speed until soft peaks form. Add the granulated sugar and beat until the whites are stiff and glossy, about 2 minutes. Using a rubber spatula, fold in the almond mixture. Spread the meringue on the parchment to fill the rectangle. Sprinkle the chopped peanuts on top. Bake for about 20 minutes, until lightly browned and firm. Let cool.
  4. In a medium bowl set in a saucepan of simmering water, heat the peanut butter with the butter and milk chocolate, stirring constantly, until smooth and melted. Remove from the heat and fold in the Rice Krispies. Spread the mixture all over the meringue rectangle. Transfer to the freezer and let cool completely.
  5. Ganache: In a medium bowl set in a saucepan of simmering water, melt the chocolate. Whisk in the cream until smooth. Remove from the heat and refrigerate for 1 hour, whisking occasionally, until thick enough to spread.
  6. Cake Assembly: Place the bottom cake layer cut side up on a large board. Spread one-third of the ganache over the cake. Invert the filling onto the cake and peel off the paper. Spread half of the remaining ganache over the filling, then top with the second cake layer. Refrigerate until firm, at least 1 hour. Using a serrated knife, trim the edges. Spread the remaining ganache over the top and sides of the cake and refrigerate to set. Keep leftovers refrigerated.
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4 Comments leave one →
  1. skippy14 permalink
    December 1, 2008 10:25 pm

    Was this hard to cut? It seems like the meringue layer might be sticky/shattery. Otherwise, I’m intrigued.

  2. juicybits permalink*
    December 2, 2008 9:17 am

    no, it wasn’t hard to cut at all. the meringue layer isnt so hard that it shatters- its crispy and chewy, versus brittle. just just a good sharp knife and you’ll be able to cut through it easily.

  3. skippy14 permalink
    December 2, 2008 3:37 pm

    Thanks–I love playing with meringue. Now I just need to find the occasion to test it out!

  4. Amanda permalink
    May 7, 2016 11:56 am

    How have I never had this??? Can you pretty please make it for me?

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