Ingredients
Method
Instructions
- Preheat oven to 350°F (175°C). Grease a 10x15-inch baking sheet or jelly roll pan. In a large mixing bowl, whisk together the flour, sugar, and salt.
- In a medium saucepan, combine the butter, water, and cocoa powder. Heat over medium heat, stirring occasionally, until the butter melts and the mixture comes to a boil. Remove from heat immediately.
- Pour the hot cocoa mixture over the flour mixture and stir until just combined. In a small bowl, whisk together the buttermilk, eggs, baking soda, and vanilla. Add this to the chocolate batter and mix until smooth.
- Pour the batter into the prepared baking sheet and spread evenly. Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
- While the cake bakes, prepare the icing. In a saucepan, combine the butter, milk, and cocoa powder. Bring to a boil, then remove from heat. Stir in the vanilla and powdered sugar until smooth. If using nuts, stir them in now.
- Pour the warm icing over the hot cake as soon as it comes out of the oven. Spread evenly with a spatula. The icing will set as the cake cools. Let cool completely before cutting into squares.
Notes
Use room temperature ingredients for smoother batter, don't overmix, ice while warm, let cool completely before cutting, try different nuts like pecans or walnuts for customization.
