Whisk the dry ingredients in a bowl. Add flour, sugar, and cocoa powder now. Include the baking powder and soda too. Mix them until the color is even.

Add the eggs and milk next. Pour in the oil and vanilla extract. Use your mixer on medium speed now. Beat the mixture for two full minutes.

Stir in the boiling water by hand. The batter will look very thin now. Do not worry about the thin texture. This is normal for this cake style.

Pour the batter into the prepared pans. Make sure the amounts are even. Bake for thirty to thirty five minutes. Use a toothpick to check for crumbs.

Let the cakes cool in the pans. Wait for ten minutes before moving them. Place them on a wire rack now. Let them cool completely before frosting.