Preheat and Prepare: Preheat your oven to 450°F (230°C/Gas Mark 8). Grease a 7 or 8-inch (180-205mm) cake tin.
Prepare the Apples: Peel, core, and chop the apples into various sized rough chunks.
Mix Dry Ingredients: Sift flour, baking powder, and salt into a bowl and rub in the butter until the mixture resembles breadcrumbs. Stir in the sugar.
Combine: Work in the eggs, then add the apple chunks and mix well.
Fill the Tin: Turn the chunky mix out into the prepared baking tin.
Top with Sugar: Sprinkle the 1 oz (30g) of sugar on top to form a sweet crust.
Bake: Place in the oven and bake for 45 to 50 minutes until golden brown. If the top starts to brown too quickly, cover the top of the tin with foil, removing it a few minutes before the end.
Cool and Dry: Leave to cool in the tin for 10 minutes before placing it on a wire rack. If the base appears a little too moist, place the cake back in the oven upside down to allow it to dry a bit.