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Tiramisu Layer Cake

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Ingredients
  

  • CAKE
  • 2-3/4 cup pastry flour
  • 1-1/4 cup PLUS 2/3 cup granulated sugar
  • 3/4 tsp baking powder
  • 1/2 tsp salt
  • 3/4 cup canola oil
  • 4 egg yolks
  • 6 Tbsp sour cream or Greek yogurt
  • 1/2 cup PLUS 1 Tbsp whole milk
  • 1-1/2 tsp vanilla
  • 6 egg whites
  • 1-2 Tbsp espresso powder, you can substitute crushed instant coffee or coffee liqueur

Instructions
 

  • Preheat oven to 350ºF. Prepare 3-9" layer pans with butter and flour.
  • Whisk together flour, 1-1/4 cup sugar, baking powder, salt. Set aside.
  • In a large bowl, whisk oil and egg yolks until well blended. Stir in sour cream and 1/2 cup milk and vanilla. Add dry ingredients in 3 additions until blended.
  • In the bowl of a stand mixer, beat egg whites until soft peaks form. Gradually add 2/3 cup sugar, beating until stiff peaks form.
  • Fold into batter in 2-3 additions.
  • Remove 1/3 of the batter. Fold in as much espresso powder as you like.
  • Pour white batter evenly into 2 prepared pans and the coffee batter into the third pan. Bake 18-20 minutes until set. Remove to cool completely.

Coffee Mixture: In a small bowl mix 1/2 cup brewed espresso or strong coffee and 2 Tbsp coffee liqueur. Set aside.

    Prepare Filling: Mix 1 cup Mascarpone cheese, 1/2 confectioner's sugar, 1 Tbsp of milk and 2 Tbsp coffee liqueur; beat until smooth. Add a bit more milk if too stiff. Set aside.

      Prepare Frosting: Whip 2 cups of whipping cream with 1/4 cup of confectioner's sugar until stiff peaks form.

        ASSEMBLY: Place first white layer on a platter. Poke holes with a toothpick about 1 inch apart. Pour 1/3 of the coffee mixture over the layer. Spread with 1/3 of the cheese filling. Repeat with coffee layer and the final white layer . Frost overall with whipped cream, dusting the top with cocoa.