¾cupplus 1 tablespoon unbleached all purpose flour
½cupunsweetened cocoa powdersifted
½teaspoonbaking soda
¼teaspoonbaking powder
¼teaspoonsalt
1large egg
¼cupcanola oil
½cupsour cream
1teaspoonvanilla extract
Ganache:
2ouncesbittersweet chocolatechopped
¼cupheavy whipping cream
1tablespoonunsalted butterroom temperature
Instructions
Preheat the oven to 300. Butter the bottom and sides of an 8" springform pan.
Put the semisweet chocolate in a medium bowl with the hot coffee. Let stand, stirring occasionally, until the chocolate is melted and the mixture is smooth and opaque.
Meanwhile, in another medium bowl, whisk together the sugar, flour, cocoa powder, baking soda, baking powder and salt.
In the bowl of a stand mixer beat the egg on medium speed until it is pale yellow, about 1 minute. Add the oil, sour cream, and vanilla, beating well. Gradually pour in the melted chocolate mixture, and beat to thoroughly combine.
Add the dry ingredients all at once, and beat on low speed until the batter is just combined. Using a rubber spatula, scrape down the sides of the bowl and briefly stir to make sure that all the dry ingredients are absorbed. Do not over mix.
Pour the batter into the prepared springform pan. Place pan on a cookie sheet and bake for 55-60 minutes, or until a toothpick inserted in the center of one comes out clean. The sides of the cake will begin to pull away from the pan and the center of the cake should not dent when gently touched.
Transfer the cookie sheet with pan to a wire rack and cool for 10 minutes. Remove the cookie sheet and leave the cake in the pan, allowing it to cool completely.
To make the ganache, heat the heavy cream to a gentle boil and pour over the chocolate. Let sit for a minute or so to let the chocolate melt. Stir gently in a circular motion until smooth. Add the butter pieces and stir until smooth.
Pour the ganache onto the center of the cake allowing it to drip off the sides of the cake. If you have any left over ganache, use a spoon to drizzle it over slices when placed on a dessert plate.
Using low-quality chocolate or heavy whipping cream can affect the stability of the ganache. It's best to use high-quality ingredients for the best results. I would not recommend using chocolate chips, opt for baking chocolate bars such as Ghirardelli or Guittard.
Use the scoop and sweep method to measure your flour. To do so, aerate your flour with a spoon then scoop it into a measuring cup until it's overflowing (do not pack the flour into the cup, you want it to be fluffy and loose). Use the back end of a butter knife to level it off.