Step 1

Crumble the pudding into a bowl or roughly process in a food processor, then stir in the zest.

Step 2

In a separate bowl, beat together eggs and milk and pour over the pudding. Set aside for 20 minutes. Preheat oven to 190°C and grease a 23cm pie dish.

Step 3

Spread the pudding mixture into the pie dish, flatten the top. Combine the sugar and cinnamon and sprinkle on top. Bake for 30 minutes.

Step 4

Dust with icing sugar and serve hot with ice-cream or cold, cut into slices like a cake and topped with cream.