Preheat the oven to 350 degrees F. Grease a 9-inch round cake pan with butter and line with parchment paper.
In a large bowl, whisk together the flour, cocoa powder, baking powder, baking soda and salt. Set aside.
In another bowl, combine the melted butter, granulated sugar and brown sugar and whisk until combined. Whisk in the eggs, one at a time, and then the vanilla extract.
Add the dry ingredients to the wet ingredients and mix until just combined. Do not overmix. Fold in the buttermilk and chocolate chips.
Pour into the prepared cake pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool completely before serving.
Interesting Facts
This cake is a great choice for birthday parties, family gatherings, or any special occasion.
The cocoa powder gives this cake a rich, chocolatey flavor.
This cake is made with only one bowl, so there's less mess to clean up.
This cake tastes best when served with a dollop of whipped cream.