Preheat oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.
In a large bowl, combine melted butter, sugar, and cocoa powder. Beat together until creamy.
Add eggs one at a time, beating well after each addition. Stir in vanilla.
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add to wet mixture, alternating with the buttermilk, and mix until just combined.
Pour batter into the prepared pan. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Let cake cool in the pan for 10 minutes before transferring to a wire rack to cool completely.
Interesting Facts
This gluten-free chocolate cake is a twist on a classic Depression-era recipe, which was typically made with only four ingredients.
This cake is a great option for anyone with a gluten intolerance or gluten sensitivity, as it uses gluten-free flour.
The buttermilk in the recipe makes this cake extra moist and rich.