Preheat Oven: Preheat your oven to 350°F (177°C). Grease and flour three 6-inch or two 8-inch round cake pan.
Combine Dry Ingredients: In a large mixing bowl, sift together the flour, cocoa powder, sugar, baking soda, baking powder, and salt. Whisk until well combined.
Add Eggs: Add the eggs one at a time to the dry ingredients, mixing well after each addition.
Incorporate Wet Ingredients: Add the buttermilk, oil, melted butter, and vanilla extract to the bowl. Mix until the batter is smooth and well combined.
Add Coffee: Slowly pour in the hot brewed coffee, mixing gently until it’s fully incorporated. The batter will be thin, which is normal.
Bake: Pour the batter evenly into the prepared cake pans. Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
Cool and Serve: Let the cakes cool in the pans for 10 minutes, then transfer them to a wire rack to cool completely before frosting.
