Preheat your oven to 350°F (175°C).
Grease and flour two 9-inch round cake pans.
In a large bowl, combine flour, sugar, cocoa powder, baking powder, baking soda, and salt.
Add eggs, milk, oil, and vanilla extract. Mix until smooth.
Slowly stir in boiling water until well combined.
Pour the batter evenly into the prepared pans.
Bake for 30-35 minutes, or until a toothpick comes out clean.
Allow cakes to cool for 10 minutes in the pans, then remove and cool completely on a wire rack.
Frost with your favorite chocolate frosting.
Slice, serve, and enjoy your delicious chocolate cake!