Vanilla Apple Sponge

250g sugar
250g unsalted butter
250g self-raising flour

1 vanilla pod, split and deseeded (save the seeds)
4 eggs
4 Bramley apples, peeled, cored and cut into wedges
2 tbsp brown sugar
a quarter of a tsp of ground cinnamon

Preheat oven to 180C/fan 160C/Gas 4.
Grease a 30cm springform round cake tin, and line with greaseproof paper.
Whisk the sugar and butter together until the mixture turns pale.
Fold in the flour and the vanilla seeds.
Mix in the eggs until you get a batter, then pour into the cake tin.
Place the apple wedges halfway into the batter, sprinkle with the sugar and cinnamon and bake for 35-40 mins.