1poundsemi-sweet chocolatechopped into small pieces
6tablespoonsDutch-processed cocoa powder
6tablespoonsboiling water
1 1/2cupsunsalted butter
1cuppowdered sugar
1/4teaspoonsalt
Instructions
For the cake:
Preheat the oven to 350 degrees. Line the bottoms of two nine-inch cake pans with parchment paper. Butter and flour the pans, tapping out excess. Set aside.
In a medium bowl, combine the two flours, baking powder, and salt. Whisk together.
In the bowl of your mixer, combine the butter and sugar. Beat on medium-high speed until light and fluffy. Add the eggs, one at a time, mixing well after each addition. Scrape down the bowl as needed. Stir in the vanilla.
With the mixer on low, beat in the dry ingredients in three additions, alternating with the milk. Beat each addition until just incorporated. Pour in the sprinkles and give it a final stir.
Pour the batter into the prepared cake pans. Bake for 30-35 minutes or until a tooth pick inserted in the center comes out clean. Rotate the pans halfway through baking. Transfer the pans to a wire rack and let cool for 20 minutes. Run a knife around the edge of the cakes to loosen the up and then invert them on to the wire rack. Remove and discard the parchment paper. Cool the cakes completely before frosting and level the layers if needed.
For the frosting:
Place the chocolate in a heat proof bowl above a pan of simmering water. Heat, stirring occasionally, until the chocolate has melted. Let the chocolate cool to room temperature, about 25-30 minutes. Combine the cocoa powder and boiling water in a small bowl and stir until the cocoa is dissolved.
In the bowl of your mixer, beat together the butter, sugar, and salt until light and fluffy, about 4 minutes. Add the chocolate and beat on low speed until well combined. Beat in the cocoa until well blended.