INSTRUCTIONS:

1st Step

Prepare the oven to 350 degrees Fahrenheit (175 degrees Celsius) and grease a 9-by-13-inch baking pan.

2nd Step

In a large basin, combine the flour and sugar granules. In a saucepan, melt the butter over medium heat. Stir in the cocoa powder and water. Once the mélange has reached a simmer, remove it from the fire.

3rd Step

Pour the steaming cocoa mixture into the basin containing the powdered ingredients. Add buttermilk, eggs, baking soda, vanilla extract, and salt to the mixture after thoroughly mixing. Beat until creamy.

4th Step

Pour the slurry into the prepared baking dish and uniformly spread it out. Bake in the prepared oven for 25-30 minutes or until a toothpick inserted into the center comes out clean.