In a large sauce pan melt butter, sugar, cocoa, water.
In a large bowl add the flour, baking power, salt and eggs. Beat nicely and set aside.
Before pouring syrup into the batter, set aside 1 small cup of syrup. Pour syrup very slowly and mix.
Stir cake batter and add in the Vanilla extract.
Pour in Cognac. Pour batter into a buttered baking pan, and bake for 25 minutes at 180 degrees.
This cake will not rise like the normal sponge cake, this is a bit flatter, buttt two pieces one on top of the other will absolutely do the trick, as you can see in the picture. 🙂
The cup of syrup that was set aside you can use to pour onto each piece as an added addition, I added sprinkles on this piece 🙂