01 -
Warm the cream in the microwave until hot to the touch. Toss in the chopped chocolate, let it rest for 2 minutes, then stir until silky and fully mixed. Leave it to cool down.
02 -
Turn the oven on to 350°F. Butter or spray a 9x13-inch baking dish to prevent sticking.
03 -
Combine cocoa powder and hot water or coffee. Stir until smooth and thickened a bit.
04 -
Blend together brown sugar, sour cream, oil, eggs, and vanilla. Gently fold in the flour, baking soda, baking powder, and salt until just mixed.
05 -
Pour the mix into the greased dish. Bake for 30-35 minutes, or until a toothpick inserted comes out clean. Let it cool for about an hour.
06 -
Once the ganache is at room temperature and thick like peanut butter, whip it for 4 minutes until pale and fluffy. Spread across the cooled cake.