01 -
Preheat oven to 177°C. Grease and line two 15 cm round cake pans with parchment paper.
02 -
In a mixing bowl, sift together cake flour, baking powder, and salt. Set aside.
03 -
Combine instant espresso powder with boiling water in a small cup and let cool.
04 -
Using a stand mixer fitted with paddle, cream softened butter on medium speed for about 2 minutes until soft and creamy. Gradually add granulated sugar, mixing until pale and fluffy and scraping down the bowl as needed.
05 -
Add vanilla extract, then mix in eggs one at a time, ensuring each is well combined before adding the next. Scrape the bowl as necessary.
06 -
On low speed, add flour mixture in four additions alternating with the milk, beginning and ending with the flour. Mix until just smooth. Gently fold in the cooled espresso mixture.
07 -
Divide batter evenly between prepared pans. Smooth tops. Bake for 20 minutes, or until a skewer inserted comes out with moist crumbs and edges are pale golden.
08 -
Let cakes cool in pans for 5 minutes. Turn out onto wire racks, peel off parchment, and let cool fully for about 1 hour.
09 -
Using a mixer on medium speed, whisk cold mascarpone until creamy, about 2 minutes. Add sifted powdered sugar and blend until smooth. Gradually mix in chilled espresso, then stir in heavy cream and mix until fully combined and creamy.
10 -
Once cooled, slice each cake horizontally to yield four even layers. Brush each layer with coffee or coffee liqueur.
11 -
Spread a thin layer of mascarpone frosting on the bottom cake layer. Stack the next layer, brushing with coffee and adding more frosting. Repeat layering and frosting until fully assembled. Coat the sides and top with remaining frosting.
12 -
Garnish the finished cake with chocolate shavings and generously dust with cocoa powder. Chill if desired before serving.