Ingredients:
2/3 cup of softened butter (160g)
2/3 cup of sugar (160g)
2 eggs
1/2 cup of lemon juice
1 tablespoon of finely grated lemon zest
Instructions:
Using a stand mixer with large bowl cream the butter and sugar until light and fluffy.
Add eggs one at a time and beat, scraping down the sides of the bowl after each addition.
Add lemon juice and beat to combine; scraping down the sides of the bowl occasionally – mixture will look very curdled at this point – this is normal.
Transfer mixture to a saucepan and heat over low heat with constant stirring until mixture begins to thicken.