Ingredients
Method
- Preheat oven to 350°F (175°C) and grease a 6-inch round cake pan. Whisk the flour, sugar, cocoa, baking soda, baking powder, and salt in a large bowl.
- Add the egg, buttermilk, oil, and vanilla. Stir, then pour in the hot coffee and mix just until smooth.
- Pour the batter into the pan, tap it lightly, and bake 26–30 minutes until a toothpick comes out with moist crumbs.
- Heat the cream until small bubbles form, then pour it over the chopped chocolate. Let it sit 2 minutes, then stir until glossy. Cool 15 minutes.
- Turn the cake out, peel off parchment, and spread the ganache on top. Slice and serve.
Notes
The cake keeps well under a dome, but the frosting is best on day one. If making ahead, bake the cake, cool it completely, wrap it, and store at room temperature. Make the ganache the day you plan to serve it.
