5 cups powdered sugar (for the chocolate frosting)
1 4-ounce baking chocolate bar
Directions
Preheat the oven to 350 F. In a large mixing bowl, add the white sugar, brown sugar, flour, 1 ¼ cups cocoa powder, baking powder, baking soda, and salt. Mix to combine.
Add the eggs, and mix. Then, add the oil and 1 cup milk. Mix until just combined, then stir in the hot water. The batter will be thinned out, which is the goal.
Prepare a cake pan by spraying it with cooking spray. Place a piece of parchment paper in the bottom to prevent sticking. Pour the batter into the cake pan.
Bake the cake for 25 minutes until the top is fully set. Once baked, remove the cake from the oven to cool completely.
To make the chocolate frosting, add 1 stick softened butter to a mixing bowl. Whip the butter until fluffy, then mix in 2 cups powdered sugar and 2 tablespoons milk. Continue gradually adding the powdered sugar and mix until the frosting starts to come together. Mix in the 3 tablespoons cocoa powder and turn the speed up on the mixer to whip until fluffy.
Once the cake is cooled, spread the chocolate frosting on top. Decorate the cake with chunks of chocolate, a drizzle of melted chocolate, and sprinkles.