Put the mixture in a buttered pudding bowl (I used a 1 litre pudding basin).. Cover the top of the bowl with cling film.
Fill the slow cooker pot with an inch of boiling water, then place the pudding bowl in the pot. Replace the lid and steam the pudding for 2.5 hours on high.
Invert the pudding bowl, and tip the pudding onto a serving plate.
Drizzle over golden syrup and serve with custard or ice cream.
golden syrup
Notes
Slow cooker size: For this recipe you need to use a large slow cooker. Mine is 5.7 litre. Or one that fits the size of pudding basin you want to use inside.