I think someone has to give you a real recipe (ie with natural ingredients)
Lemon cake .
4oz self raising flour(110g)
1 teaspoon baking powder
4oz soft margarine(or butter)
4 oz caster sugar
2 large eggs
grated rind(zest) of a lemon plus 1 tablespoon of its juice
sift fflour and raising agent
mix all other ingredients in till mixed if the mixture is very stiff add another teaspoon or so of lemon juice till it drops off spoon when tapped agaist the side of the bowl.
divide mixture into 2 lined sandwich tins 7 inch dia and bake in 325 o F or 170 o C oven for 30 mins .Remove from tins to cool then sandwich together with lemon curd or cream.
Hope you like cake , I am still amazed at you having a lemon tree in your garden !!
BTW i will not be making this recipe as i have just signed up for the weight loss competition LOL