(The recipe revealed by Double Tree by Hilton during COVID-19 travel lockdown.) Ingredients 225 g softened butter 165 g (3/4 cup and 1 tbsp) white sugar 150 g (3/4 cup) packed soft brown sugar 2 large eggs 1 1/4 tsp vanilla extract 1/4 tsp freshly squeezed lemon juice 290 g (2 1/4 cups) plain flour…