Melt the butter and let it cool. In a mixing bowl, whisk the eggs, sugar and vanilla extract until pale and airy
Sift the flour and the cocoa powder together and gradually mix it in, with the salt, into the egg-sugar mixture. Whisk until smooth and completely incorporated
Add the melted butter and mix it in uniformly. Then pour this batter in a cake tin
Bake, in a pre heated oven, for 40 minutes, at 180°C. Keep checking on the cake every 15-20 minutes
To test if the cake is done, after 40 minutes, gently press the centre, if the crust cracks then your cake is done
Remove and let it cool. Serve the kladdkaka or sticky chocolate cake warm with some berries and/or vanilla ice cream. Enjoy!