Preheat the oven to 108°/160° fan/Gas 4
Lightly grease the cake tins
Add all the ingredients into a large bowl or stand mixer and beat for around 2 minutes or until smooth and lighter in colour
Divide the mixture between the tins and level the tops Bake for about 25 minutes, or until well risen and golden and the cakes are shrinking away from the side of the tins.
Leave the cakes to cool for a few minutes, then run a pallet knife around the sides and turn the cakes out. Peel off the paper and leave to cool on a wire rack
Whip the double cream
Spread one half of your cake with jam, the other with whipped cream and sandwich together
Sprinkle the top with sugar