01 -
In a large mixing bowl, whisk together flour, granulated sugar, brown sugar, cocoa powder, baking soda, baking powder, and salt until homogeneous and free of lumps.
02 -
In a separate bowl, beat eggs, buttermilk, vegetable oil, coffee, and vanilla extract until smooth and fully incorporated.
03 -
Gently fold the wet ingredients into the dry mixture, stirring until just combined and no dry flour remains. Avoid overmixing for a tender crumb.
04 -
Grease and line three 20 cm round cake pans with parchment paper. Evenly divide batter among the pans and tap gently to release trapped air.
05 -
Bake in a preheated oven at 175°C for 30–35 minutes, or until a toothpick inserted in the center emerges with a few moist crumbs attached.
06 -
Allow cakes to cool in pans for 10 minutes, then transfer onto wire racks to cool completely before frosting.
07 -
Combine chocolate chips, honey, and heavy cream in a heatproof bowl. Melt gently over a double boiler or in short microwave bursts, stirring until smooth. Let cool slightly until thickened.
08 -
Whip softened butter in a large bowl until light and creamy.
09 -
Gradually add powdered sugar, cocoa powder, and salt. Incorporate the cooled melted chocolate mixture and vanilla extract; beat until silky and spreadable.
10 -
Position one cake layer on a serving plate. Spread a generous layer of frosting over the top.
11 -
Continue layering with cake and frosting. Cover the sides and top with remaining frosting. Garnish as desired with chocolate shavings or sprinkles.