Chocolate and Vanilla Marble Bundt

METHOD

1. Preheat your oven to 180c/170c fan/350f. Prepare your bundt tin by brushing with melting butter and sprinkling flour.
2. Add the butter and sugar to the bowl of a stand mixer and beat until very fluffy.  Beat the vanilla and eggs together in a small bowl and then add them little by little to the stand mixer. Add the flour and then mix until just combined. Pour half the mixture into a separate bowl.
3. Place the cocoa powder in a small bowl with the boiling water and mix to a paste. Add it to one of the bowls of mixture and mix in.
4. Pour the batters into the prepared tin and then use a skewer to swirl them around. Bake for 40 minutes or until a skewer comes out clean.
5. Allow the bundt to cool in the tin for 10 minutes before inverting onto a wire rack. Dust with icing sugar and serve.