Dutch apple cake

• 6 oz (175 g) self-raising flour
• 1 level teaspoon baking powder

Heat the oven to 400°F (200°C) or gas no. 6. Grease an 11×7 inch (27.5×17.5 cm) baking tin and line the base and shorter sides with a strip of greased greaseproof paper long enough to overlap the sides. Si