- 2 cups white sugar
- 2 1/2 cups all-purpose flour
- 1 1/2 teaspoons baking soda
- 1/2 teaspoon salt
- 1/2 cup butter
- 1/2 cup shortening
- 1/3 cup unsweetened cocoa powder
- 1 cup hot strongly brewed coffee
- 2 eggs
- 1/2 cup buttermilk
- 1/2 cup butter
- 2 tablespoons unsweetened cocoa powder
- 1/4 cup milk
- 3 1/2 cups confectioners' sugar
- 1 teaspoon vanilla extract
- Preheat an oven to 350 degrees F (175 degrees C). Grease an 11×17 1/2-inch jelly roll pan. Combine white sugar, flour, baking soda, and salt together in a bowl.
- Place 1/2 cup butter, shortening, 1/3 cup cocoa powder, and coffee in a microwave safe bowl. Heat in microwave for three minutes, stirring after each minute, until well blended. Whisk together the eggs and buttermilk in a bowl. Stir in the flour and cocoa mixtures, mixing until just combined. Pour mixture into the prepared pan.
- Bake in the preheated oven until the top is dry and the edges have started to pull away from the sides of the pan, about 20 minutes.
- Heat the remaining 1/2 cup butter, 2 tablespoons cocoa, and milk in a saucepan over medium heat until combined, about 5 minutes, stirring often. Stir in the confectioners' sugar and vanilla extract until smooth. Pour the warm frosting over the hot brownies. Allow brownies to cool completely before slicing into bars.