• Prepare a 7 or 8 inch cake pan by greasing well and coating with flour.
• Whisk together flour, sugar, cocoa powder, baking soda, baking powder and salt until well blended.
• In a separate bowl whisk together egg, buttermilk, vegetable oil and water.
• Add egg mixture to flour and stir until just combined. Add in boiling water and mix to combine.
• Pour into prepared cake pan
• Cook in air fryer at 320º F for 25 minutes. Use a toothpick to test if the cake is done, it should come out mostly clean when you insert it into the center of the cake.
• Once the cake is baked carefully remove the pan from the air fryer and cool on a wire rack for 10 minutes before removing the cake from the pan to cool completely.
• Once the cake is cooled frost and decorate as desired.

To Make Frosting

• Using a hand mixer or the whisk attachment for an electric stand mixer whip butter until it is smooth and creamy.
• Add powdered sugar, cocoa powder, and salt until it is combined.
• Add vanilla and slowly pour in milk, beating until it is smooth and your desired consistency.
• Adjust milk or sugar as necessary if your frosting is to thick or thin.