Cut the butter into small pieces, sift the starch
In a bowl put the butter at room temperature and the sugar. Stir until they are well blended like a cream
Add one egg at a time and mix well until absorbed. Do not add the second egg until the first is completely absorbed
Add the starch and mix well until it forms a cream
After the starch has been well absorbed, add the grated lemon peel, the baking powder and the spoonful of flour. Mix everything until absorbed
Preheat the oven to 180ºC and line a baking tray with parchment paper. Pour the dough into the pan and level it as much as possible so that it is uniformly high and there are no air bubbles in the mixture
Bake 30/35 minutes in the oven.
When ready, leave to cool for 20 minutes. It is an extremely crumbly and soft cake, and delicious of course.