Method

Preheat oven to 180°C. Grease a 20x30cm cake tin and line with baking paper.

Using an electric mixer, beat the butter, sugar, eggs and vanilla essence until pale and creamy.

Sift flours together then add to the butter mixture with salt and milk. Stir until combined.

Spread batter into the prepared cake tin and spread apple slices over the mixture, pressing down gently.

To make crumble topping, combine all the dry ingredients in a bowl and using your fingertips, rub butter until the mixture resembles coarse breadcrumbs. Sprinkle the topping over cake mixture.

Bake cake for an hour or until a skewer inserted into the centre comes out clean. Serve warm with cream.