Melt the butter and keep it cool while we are preparing other ingredients

Beat the eggs, add sugar and mix it until it's frothy then add the condensed milk, mix for few more minutes

Add all-purpose flour in batches and add the melted butter gradually

Lastly add the cocoa powder as well as baking soda and chocolate essence

Pour it to the baking pan and bake it for 20-25min over 180°c

Serve it with black coffee or tea. Enjoy!