Preheat your oven to 350°F (175°C) and grease your cake pans.
In a large bowl, cream together the softened butter and sugar until light and fluffy.
Add the eggs one at a time, beating well after each addition.
Mix in the vanilla extract.
In a separate bowl, combine flour, cocoa powder, baking powder, and salt.
Gradually add the dry ingredients to the wet mixture, alternating with milk.
Pour the batter into the prepared pans and smooth the tops.
Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cakes to cool in the pans for 10 minutes before transferring to a wire rack.
Once cooled, decorate with colored icing to create Easter-themed designs.