Crack the eggs into a bowl and beat until foamy.
Add sugar in 2-3 batches while mixing.
Sift in flour, cocoa powder, and baking powder.
Add milk and melted butter and mix until well combined.
Pour the batter into a mold and smooth the top.
Bake in a preheated oven at 180°C for 25-30 minutes.
Let it cool completely, then plate.