Ingredients
Method
1.Preheat the oven to 180°C, setting a shelf just below the centre of the oven. Line a 23cm round cake tin on the bottom and sides with baking paper.
2.Put softened butter in the bowl of an electric cake mixer and mix until creamy and loose. Gradually beat in the sugar and continue beating until fluffy and lighter in colour (creamed). You’ll need to stop the machine and scrape down the sides of the bowl from time to time.
3.Gradually beat in eggs, adding up to 2 tablespoons of the measured flour, and the vanilla extract.
4.Meanwhile, peel apple, slice thinly, discarding core, and toss slices with lemon juice.
5.Sift the flour, salt, baking powder and cinnamon together on to a piece of paper or plate, then mix into creamed mixture with a large spoon or scraper. Mix in warmed milk in two lots, then the apple slices.
6.Transfer the mixture to the tin and smooth the top of the batter. Gently press blackberries into top of cake in a random pattern.
7.Bake for 45-50 minutes, until golden-brown. Cool in the tin for 15 minutes, then turn out onto a plate. Serve warmish dusted with icing sugar.