Ingredients:
- 2 cups (250g) all-purpose flour
- 2 cups (400g) granulated sugar
- 3/4 cup (75g) unsweetened cocoa powder
- 2 tsp (10g) baking soda
- 1 tsp (5g) baking powder
- 1 tsp (5g) salt
- 1 cup (240ml) buttermilk
- 1/2 cup (120ml) vegetable oil
- 2 large eggs
- 2 tsp (10ml) vanilla extract
- 1 cup (240ml) boiling water
- 4 oz (115g) semi-sweet chocolate, chopped
- 1/2 cup (120ml) heavy cream
- 1 tbsp (15g) unsalted butter
Instructions:
- Preheat oven to 350°F (175°C). Grease a 9-inch round cake pan and line the bottom with parchment paper.
- In a large bowl, whisk together the flour, sugar, cocoa powder, baking soda, baking powder, and salt until no large lumps remain.
- Add the buttermilk, oil, eggs, and vanilla extract to the dry ingredients. Whisk by hand until the batter is smooth and cohesive.
- Carefully stir in the boiling water with a spatula until combined; the batter will be thin.
- Pour the batter into the prepared pan and bake for 30–35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
- Let the cake cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
- Place chopped chocolate in a bowl. Heat heavy cream in a pot until it begins to simmer, then pour the hot cream over the chocolate.
- Let the chocolate and cream sit for 5 minutes, then stir gently from the center outward until glossy and smooth.
- Stir in the butter until melted and pour the glaze over the cooled cake.