Grandma’s shortbread cream cake, The cake that drives my family crazy!

Ingredients:

175 g flour
100 g butter
40 g sugar
1 egg
1 teaspoon vanilla extract
1/2 teaspoon baking powder

Crème:

2 egg whites
1 pinch of salt
1 teaspoon lemon juice
2 egg yolks
150 g) sugar
40 ml sunflower oil
1 teaspoon vanilla extract
20 g cornstarch 100 g of yogurt
400 g of ricotta