Preheat your oven to 350°F (175°C) and grease and flour your cake pans.
In a large bowl, mix the flour, cocoa powder, sugar, baking powder, and baking soda.
Add the eggs, milk, oil, and vanilla extract. Beat until smooth.
Gradually add the hot water while mixing to form a thin batter.
Pour the batter into prepared pans and bake for 30-35 minutes.
Let the layers cool completely before slicing them evenly.