Pre-heat your oven to 180°C. Mix together your sugar, eggs and oil until you have a smooth batter
Stir in your flour, baking powder and bicarb of soda. Finally, add your grated courgette and mix until combined
Divide the mixture into two 21cm cake tins. Bake for 25-30 mins
When cooked, remove your sponges from their tins and transfer to a wire rack to cool