● Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
In a large mixing bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.
● Add the eggs, milk, oil, and vanilla extract to the dry ingredients. Beat on medium speed with an electric mixer for about 2 minutes.
● Reduce the mixer speed to low and carefully mix in the boiling water. The batter will be thin, but that's okay.
● Divide the batter evenly between the prepared cake pans.
● Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center of the cakes comes out clean.
● Remove the cakes from the oven and allow them to cool in the pans for about 10 minutes. Then, transfer the cakes to a wire rack to cool completely.