Begin by preheating your oven to 180°C (350°F). Grease and line a spherical cake tin with parchment paper.
In a microwave-safe bowl, mix the darkish chocolate and butter. Microwave in 30-second intervals, stirring every time, till the chocolate and butter are utterly melted and easy.
Add the advantageous sugar and vanilla sugar to the melted chocolate combination. Stir properly till the sugars are absolutely included.
Subsequent, add the sifted flour to the combination. Stir till the flour is properly mixed.
In a separate bowl, crack the eggs and beat them flippantly. Then, add the overwhelmed eggs to the chocolate combination and blend till the batter is easy.
Lastly, add a pinch of salt to the batter and stir it in.
For the cookie dough layer: In a separate bowl, cream collectively the softened butter, granulated sugar, and brown sugar till easy. Add within the vanilla extract. Steadily combine within the flour and a pinch of salt till simply mixed. Fold within the chocolate chips.
Pour half of the brownie cake batter into the ready cake tin. Unfold the cookie dough layer evenly over the batter. Then, pour the remaining brownie batter on prime.
Bake within the preheated oven for about 25-Half-hour or till the perimeters are set however the middle remains to be barely gooey. The precise baking time might range, so control it.
As soon as baked, take away the cake from the oven and let it cool within the tin for some time earlier than transferring it to a wire rack to chill utterly.
High it with chocolate ganache or melted chocolate with choco chips.