Preheat the oven to 350°F. Spray three 8-inch cake pans with baking nonstick spray. Line the bottoms with 8-inch parchment paper circles and spray again.
In a large bowl, mix the flour, cocoa powder, baking soda, baking powder, salt, and sugar. Set aside.
2 ½ cups All-purpose flour, 1 cup Unsweetened cocoa powder, 1 ½ teaspoon Baking soda, 2 ½ teaspoon Baking powder, 1 teaspoon Salt, 1 ¾ cup White granulated sugar
In a small pan on the stove over high heat, heat the water until steaming. In a separate bowl, mix the eggs, oil, vanilla, and buttermilk. Then, slowly mix in the hot water. Tip: Go slow so you don't over heat the eggs
1 cup Buttermilk, 1 cup Oil, 4 Large eggs, 1 teaspoon Pure vanilla extract, 1 cup Hot water
Pour the wet ingredients into the dry and mix until just combined. Pour evenly between the 3 cake pans.
Bake for 25-28 minutes until a toothpick inserted comes out clean.
Let it sit for 10 minutes in the hot pans before transferring to a cooling rack. Cool completely before decorating.