Melt the butter in a frying pan and fry the apple pieces for a few minutes until they are golden. Add the sugar and blackberries and gently cook until the fruit is soft and sticky. Generously butter a 2 pint / 1 litre pudding basin and pour the fruit in.

In another mixing bowl mix the flour, sugar, baking powder, salt and all spice. Pour the milk and oil into a jug and whisk together. Add the milk and oil mixture to the dry ingredients and gently fold in. Do not over mix – it will only need about 15 folds.

Spoon the sponge batter over the fruit mixture and cover the bowl with clingfilm (make a few holes with the tip of a sharp knife). microwave at full power for 3 – 5 minutes until a cocktail stick pushed into the sponge comes out clean. Cooking time will depend on your microwave and size and shape of the bowl.

Turn out onto a plate and serve immediately with whipped cream.