Melt the dark chocolate and butter in the microwave, 20 secs at a time. Set aside to cool.
Mix the eggs, sugar & vanilla extract with an electric beater/stand mixer until creamy.
Fold in the cooled chocolate butter mix with a spatula.
Sieve the flour and cocoa together, add to the egg mix, fold in with spatula. Set aside.
Cheesecake layer: mix all the ingredients together until combined.
Pour half the brownie mix into a lined 20cm brownie tin, then spread the cheesecake mix on top, then the remaining brownie mix.
Sprinkle chopped chunks of dark chocolate on top
Bake @170°c for 20-30 mins (less time = more fudgy!)
