Ingredients

  • 1/4 cup cornstarch
  • 1 1/4 cups sugar
  • 1/2 teaspoon salt
  • 1 cup milk, whole
  • 2 cups light cream (half&half)
  • 6 ounces chocolate unsweetened chopped
  • 2 teaspoons vanilla extract
  • 1 1/2 cups flour, all-purpose
  • 1/2 teaspoon baking soda
  • 2 teaspoons baking powder
  • 1/2 teaspoon salt
  • 1/2 cup butter, unsalted
  • 3/4 cup dutch processed cocoa
  • 1 cup buttermilk
  • 1 cup coffee
  • 1 cup brown sugar packed, light
  • 1 cup sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract

Method

  • MAKE THE FILLING
  • At least 4 hours before or preferably the day before make the pudding-like filling/frosting.
  • In a large pot, whisk together the cornstarch, sugar and salt and place over medium heat.
  • Stir in the milk and cream.
  • As the mixture heats up, add the chopped unsweetened chocolate and whisk or stir continuously until it begins to bubble and thicken.
  • If the milk is cold this will take about 10 minutes depending on your stovetop.
  • Remove from the heat, stir in the vanilla extract and scrap into a bowl using a rubber spatula.
  • Place waxed paper over the pudding, touching the pudding to prevent forming a skin.
  • Place into the refrigerator, at least 4 hours until very thick and cold.
  • It's best to make it the day before.
  • MAKE THE CAKE
  • Preheat the oven to 325F (160C).
  • Grease and flour two 8 inch round cake pans.
  • In a large bowl sift together (or whisk) the dry ingredients: flour, baking soda, baking powder and salt.
  • Melt the butter in a medium-sized pot over medium heat.
  • Add the cocoa powder (dutch-processed) and stir, cooking for one minute.
  • Remove from the heat and stir (or whisk) in the buttermilk, coffee, brown sugar and sugar.
  • Whisk in the vanilla and eggs, then slowly stir in the flour until combined.
  • Pour equal amounts in each of the two cake pans (that have been greased and floured).
  • Bake for 30 to 35 minutes until a toothpick inserted into the center comes out clean.
  • Cool on wire rack for 10 to 15 minutes then turn out onto a wire rack.
  • Allow to cool for at least 1 hour.
  • ASSEMBLING
  • Using a long serrated knife, cut each cake in half horizontally (cut a bit, turn, cut, turn, until all the way through).
  • Crumble one of the cake halves (the one that doesn't look as nice or is uneven) and crumble into medium sized crumbs, set aside.
  • Position one layer on a cardboard round or cake stand.
  • Use one cup of the filling mixture and spread over the cake layer.
  • Top with another cake layer and fill with another cup of filling.
  • Use the remaining filling and spread with an offset spatula over the top and sides of all layers.
  • Sprinkle the cake crumbs over the top and sides, pressing lightly to ensure they stay in place.
  • Can be refrigerated for up to 2 days.