Step 1: Preheat the Oven

Preheat your oven to 180°C (350°F). Grease a medium-sized baking dish (around 1.5 liters) with butter.

Step 2: Prepare the Apple Base

Place the peeled, cored, and sliced apples into a saucepan with the caster sugar, lemon juice, water, and cinnamon (if using). Cook the apples over medium heat for about 8-10 minutes, stirring occasionally, until they have softened but still hold their shape. Transfer the stewed apples to the prepared baking dish and spread them out evenly.

Step 3: Make the Sponge Topping

In a large bowl, cream the softened butter and caster sugar together until light and fluffy. Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.

In a separate bowl, sift the self-raising flour, baking powder, and a pinch of salt together. Gradually fold the dry ingredients into the wet mixture until fully combined. Be careful not to overmix to keep the sponge light and fluffy.

Step 4: Assemble the Pudding

Spoon the sponge mixture over the stewed apples, spreading it evenly to cover the apple base completely. Smooth the top of the batter with a spatula.

Step 5: Bake the Pudding

Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the sponge topping is golden brown and firm to the touch. A skewer inserted into the center should come out clean.

Step 6: Serve

Once baked, remove the pudding from the oven and allow it to cool for a few minutes. Serve warm with a generous helping of custard, cream, or vanilla ice cream for the ultimate comfort dessert.