Citrus and honey microwave sponge
Place the orange and lemon zests, sugar, flour, butter, egg and honey into a food processor and blend until a smooth sponge batter is formed.
Grease a small oven proof bowl with butter and brush with the extra honey. Line the bowl with the orange and lemon slices.
Pour the sponge batter into the lined bowl and cover with cling film.
Place the bowl in a microwave and cook on full power for five minutes, or until the sponge is cooked through.